13656131 has 8 divisors (see below), whose sum is σ = 13958928. Its totient is φ = 13356000.

The previous prime is 13656127. The next prime is 13656143. The reversal of 13656131 is 13165631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13656131 - 2² = 13656127 is a prime.

It is a super-2 number, since 2×13656131² = 372979827778322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13656131.

It is not an unprimeable number, because it can be changed into a prime (13656121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12341 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (1744866).

Almost surely, 2^13656131 is an apocalyptic number.

13656131 is a deficient number, since it is larger than the sum of its proper divisors (302797).

13656131 is a wasteful number, since it uses less digits than its factorization.

13656131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 1620, while the sum is 26.

The square root of 13656131 is about 3695.4202737984. The cubic root of 13656131 is about 239.0245768742.

The spelling of 13656131 in words is "thirteen million, six hundred fifty-six thousand, one hundred thirty-one".