3171
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4864
- Proper Divisor Sum (Aliquot Sum)
- 1693
- 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
- 1800
- Möbius Function
- -1
- Radical
- 3171
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 79
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Numbers k such that (k / product of digits of k) is 1 or a prime.at n=24A001103
- Divisors of 2^30 - 1.at n=31A003538
- Coordination sequence T1 for Zeolite Code BOG.at n=40A008049
- Coordination sequence T3 for Zeolite Code BOG.at n=40A008051
- Coordination sequence T4 for Zeolite Code HEU.at n=37A008119
- Coordination sequence T3 for Zeolite Code LTN.at n=39A008142
- Coordination sequence T6 for Zeolite Code NES.at n=36A008210
- Quadruples of different integers from [ 1,n ] with no common factors between triples.at n=19A015625
- Expansion of 1/((1-2*x)*(1-4*x)*(1-5*x)).at n=4A016282
- Pseudoprimes to base 8.at n=39A020137
- Pseudoprimes to base 92.at n=32A020220
- Strong pseudoprimes to base 64.at n=16A020290
- Number of partitions of n in which the least part is odd.at n=27A026804
- a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026374.at n=4A026949
- a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026386.at n=4A026954
- Expansion of 1/((1-x)^2(1-x^2)(1-x^3)(1-x^5)) in powers of x.at n=33A028291
- 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 36.at n=23A031534
- Lucky numbers with size of gaps equal to 8 (upper terms).at n=35A031891
- Numbers k such that 219*2^k+1 is prime.at n=28A032486
- Number of partitions of n such that cn(0,5) = cn(1,5) <= cn(2,5) = cn(4,5) < cn(3,5).at n=60A036863