23923931 has 2 divisors, whose sum is σ = 23923932. Its totient is φ = 23923930.

The previous prime is 23923903. The next prime is 23923937. The reversal of 23923931 is 13932932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23923931 - 2²² = 19729627 is a prime.

It is a super-2 number, since 2×23923931² = 1144708948985522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23923937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11961965 + 11961966.

It is an arithmetic number, because the mean of its divisors is an integer number (11961966).

Almost surely, 2^23923931 is an apocalyptic number.

23923931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23923931 is an equidigital number, since it uses as much as digits as its factorization.

23923931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 32.

The square root of 23923931 is about 4891.2095641058. The cubic root of 23923931 is about 288.1448401789.

Subtracting from 23923931 its reverse (13932932), we obtain a palindrome (9990999).

The spelling of 23923931 in words is "twenty-three million, nine hundred twenty-three thousand, nine hundred thirty-one".