23656431 has 16 divisors (see below), whose sum is σ = 33516000. Its totient is φ = 14813568.

The previous prime is 23656363. The next prime is 23656447. The reversal of 23656431 is 13465632.

It is not a de Polignac number, because 23656431 - 2¹⁰ = 23655407 is a prime.

It is a super-2 number, since 2×23656431² = 1119253455315522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23656481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456 + ... + 6893.

It is an arithmetic number, because the mean of its divisors is an integer number (2094750).

Almost surely, 2^23656431 is an apocalyptic number.

23656431 is a deficient number, since it is larger than the sum of its proper divisors (9859569).

23656431 is a wasteful number, since it uses less digits than its factorization.

23656431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418.

The product of its digits is 12960, while the sum is 30.

The square root of 23656431 is about 4863.7877215191. The cubic root of 23656431 is about 287.0668704230.

The spelling of 23656431 in words is "twenty-three million, six hundred fifty-six thousand, four hundred thirty-one".