23131392 has 36 divisors (see below), whose sum is σ = 61565280. Its totient is φ = 7710208.

The previous prime is 23131391. The next prime is 23131393. The reversal of 23131392 is 29313132.

It is an interprime number because it is at equal distance from previous prime (23131391) and next prime (23131393).

It is a super-2 number, since 2×23131392² = 1070122591715328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14292 + ... + 15827.

Almost surely, 2^23131392 is an apocalyptic number.

It is an amenable number.

23131392 is an abundant number, since it is smaller than the sum of its proper divisors (38433888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131392 is an equidigital number, since it uses as much as digits as its factorization.

23131392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30138 (or 30124 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

The square root of 23131392 is about 4809.5105780110. The cubic root of 23131392 is about 284.9272082489.

The spelling of 23131392 in words is "twenty-three million, one hundred thirty-one thousand, three hundred ninety-two".