4331
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4464
- Proper Divisor Sum (Aliquot Sum)
- 133
- 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
- 4200
- Möbius Function
- 1
- Radical
- 4331
- 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
- 126
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = (12*n+1)*(12*n+11).at n=5A001538
- Coordination sequence T1 for Zeolite Code NES.at n=42A008205
- Pseudoprimes to base 70.at n=24A020198
- Pseudoprimes to base 88.at n=25A020216
- Strong pseudoprimes to base 88.at n=7A020314
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly five 1's.at n=36A020441
- Numbers k such that 65*2^k+1 is prime.at n=29A032382
- Decimal part of cube root of a(n) starts with 3: first term of runs.at n=14A034129
- Nonprime; becomes prime if any digit is deleted (zeros not allowed in the number).at n=46A034304
- Positive numbers having the same set of digits in base 5 and base 10.at n=35A037433
- Least k such that A038025(k)=n-th composite number or 0 if none.at n=23A038027
- Consider all integer triples (i,j,k), j,k>0, with binomial(i+2,3)=binomial(j+2,3)+k^3, ordered by increasing i; sequence gives i values.at n=25A054221
- A054221 without cubes.at n=10A054224
- a(n) = a(n-1) + a(n - 1 minus the number of terms of a(k) == n (mod 3) so far).at n=31A060730
- Number of 2 X 2 singular integer matrices with elements from {0,...,n} up to row and column permutation.at n=41A064276
- Semiprimes p1*p2 such that p2 mod p1 = 10, with p2 > p1.at n=26A064908
- Numbers that in base 2 need twelve 'Reverse and Add' steps to reach a palindrome.at n=35A066133
- Numbers with no zeros in their cubes such that the products of the digits of their cubes are also cubes.at n=27A067071
- Self-conjugate digitized partition numbers.at n=11A068325
- Composite numbers with all divisors congruent to 1 mod 10.at n=30A068872