23239931 has 8 divisors (see below), whose sum is σ = 27303024. Its totient is φ = 19501920.

The previous prime is 23239921. The next prime is 23239943. The reversal of 23239931 is 13993232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23239931 is a prime.

It is a super-2 number, since 2×23239931² = 1080188785769522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23239921) 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, 81116 + ... + 81401.

It is an arithmetic number, because the mean of its divisors is an integer number (3412878).

Almost surely, 2^23239931 is an apocalyptic number.

23239931 is a deficient number, since it is larger than the sum of its proper divisors (4063093).

23239931 is a wasteful number, since it uses less digits than its factorization.

23239931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162541.

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

The square root of 23239931 is about 4820.7811607664. The cubic root of 23239931 is about 285.3721658955.

The spelling of 23239931 in words is "twenty-three million, two hundred thirty-nine thousand, nine hundred thirty-one".