3118
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4680
- Proper Divisor Sum (Aliquot Sum)
- 1562
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1558
- Möbius Function
- 1
- Radical
- 3118
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 61
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Describe the previous term! (method A - initial term is 8).at n=3A001151
- Coordination sequence T4 for Zeolite Code DDR.at n=35A008074
- Numbers k such that the continued fraction for sqrt(k) has period 52.at n=11A020391
- Numbers with exactly 6 1's in their ternary expansion.at n=35A023697
- Numbers whose least quadratic nonresidue (A020649) is 17.at n=2A025026
- Size of lexicographic code of length n, Hamming distance 6 and weight 6.at n=33A031504
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 54.at n=15A031552
- Numbers k such that 33*2^k+1 is prime.at n=20A032366
- Number of binary codes (not necessarily linear) of length n with 3 words.at n=44A034198
- Number of partitions of n with equal number of parts congruent to each of 0 and 1 (mod 5).at n=39A035552
- Number of partitions satisfying cn(1,5) <= cn(0,5) + cn(2,5) + cn(3,5) and cn(4,5) <= cn(0,5) + cn(2,5) + cn(3,5).at n=29A039870
- Denominators of continued fraction convergents to sqrt(237).at n=7A041443
- Numbers having three 4's in base 9.at n=6A043471
- Numbers k such that the string 4,4 occurs in the base 9 representation of k but not of k-1.at n=38A044291
- Numbers n such that string 1,8 occurs in the base 10 representation of n but not of n-1.at n=34A044350
- Numbers n such that string 4,4 occurs in the base 9 representation of n but not of n+1.at n=38A044672
- Numbers n such that string 1,8 occurs in the base 10 representation of n but not of n+1.at n=34A044731
- Numbers whose base-5 representation contains exactly two 3's and three 4's.at n=9A045303
- a(1) = 1; a(n+1) = sum of terms in continued fraction for the sum of the continued fractions, [a(1); a(2), a(3), ..., a(n)] and [0; a(1), a(2), a(3), ..., a(n)].at n=26A058082
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 87 ).at n=15A063360