23131896 has 32 divisors (see below), whose sum is σ = 59063040. Its totient is φ = 7546208.

The previous prime is 23131877. The next prime is 23131897. The reversal of 23131896 is 69813132.

It is a super-2 number, since 2×23131896² = 1070169225109632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131897) 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, 9126 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (1845720).

Almost surely, 2^23131896 is an apocalyptic number.

It is an amenable number.

23131896 is an abundant number, since it is smaller than the sum of its proper divisors (35931144).

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

23131896 is a wasteful number, since it uses less digits than its factorization.

23131896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563 (or 20559 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 23131896 is about 4809.5629739094. The cubic root of 23131896 is about 284.9292776195.

The spelling of 23131896 in words is "twenty-three million, one hundred thirty-one thousand, eight hundred ninety-six".