1331
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1464
- 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
- 1210
- Möbius Function
- 0
- Radical
- 11
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 1
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
- yes
- 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
- 52
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- yes
- Achilles Number
- no
- Perfect Power
- yes
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- The cubes: a(n) = n^3.at n=11A000578
- a(n) = ( Sum C(p,i); i=1,...,floor(2p/3) ) / p^2, where p = prime(n).at n=5A001007
- Powers of 11: a(n) = 11^n.at n=3A001020
- Number of minimally 2-edge-connected non-isomorphic graphs with n nodes.at n=9A001072
- Smallest k such that the product of q/(q-1) over the primes from prime(n) to prime(n+k-1) is greater than 2.at n=25A001276
- Perfect powers: m^k where m > 0 and k >= 2.at n=46A001597
- Squares written in base 8.at n=26A002441
- Expansion of a modular function for Gamma_0(14).at n=14A002509
- Increasing gaps between prime-powers.at n=12A002540
- Squares and cubes.at n=44A002760
- Palindromic cubes.at n=4A002781
- a(n) = 2*(3^n - 2^n) + 1.at n=6A002783
- Number of unrooted achiral trees with n nodes.at n=22A003244
- Numbers which are the sum of 3 nonzero 4th powers.at n=35A003337
- Numbers that are the sum of 4 positive 5th powers.at n=21A003349
- Rows of Pascal's triangle written as a single number.at n=3A003590
- Numbers of the form 2^i * 11^j.at n=22A003596
- Numbers of the form 3^i*11^j.at n=15A003597
- Numbers of the form 5^i * 11^j.at n=10A003598
- Numbers of the form 7^i*11^j.at n=9A003599