23056731 has 10 divisors (see below), whose sum is σ = 34442892. Its totient is φ = 15371100.

The previous prime is 23056721. The next prime is 23056751. The reversal of 23056731 is 13765032.

It is a happy number.

It is not a de Polignac number, because 23056731 - 2⁵ = 23056699 is a prime.

It is a super-2 number, since 2×23056731² = 1063225688812722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23056695 and 23056704.

It is not an unprimeable number, because it can be changed into a prime (23056721) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 142245 + ... + 142406.

Almost surely, 2^23056731 is an apocalyptic number.

23056731 is a deficient number, since it is larger than the sum of its proper divisors (11386161).

23056731 is an equidigital number, since it uses as much as digits as its factorization.

23056731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284663 (or 284654 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 23056731 is about 4801.7424962195. The cubic root of 23056731 is about 284.6203254504.

The spelling of 23056731 in words is "twenty-three million, fifty-six thousand, seven hundred thirty-one".