23231979 has 24 divisors (see below), whose sum is σ = 35717760. Its totient is φ = 14500608.

The previous prime is 23231969. The next prime is 23231993. The reversal of 23231979 is 97913232.

It is not a de Polignac number, because 23231979 - 2⁴ = 23231963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23231969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48262 + ... + 48740.

It is an arithmetic number, because the mean of its divisors is an integer number (1488240).

Almost surely, 2^23231979 is an apocalyptic number.

23231979 is a deficient number, since it is larger than the sum of its proper divisors (12485781).

23231979 is a wasteful number, since it uses less digits than its factorization.

23231979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 816 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 23231979 is about 4819.9563276030. The cubic root of 23231979 is about 285.3396136138.

The spelling of 23231979 in words is "twenty-three million, two hundred thirty-one thousand, nine hundred seventy-nine".