23908031 has 12 divisors (see below), whose sum is σ = 28565208. Its totient is φ = 19937232.

The previous prime is 23908019. The next prime is 23908033. The reversal of 23908031 is 13080932.

It is a de Polignac number, because none of the positive numbers 2^k-23908031 is a prime.

It is a super-2 number, since 2×23908031² = 1143187892593922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23908033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4781 + ... + 8406.

It is an arithmetic number, because the mean of its divisors is an integer number (2380434).

Almost surely, 2^23908031 is an apocalyptic number.

23908031 is a deficient number, since it is larger than the sum of its proper divisors (4657177).

23908031 is a wasteful number, since it uses less digits than its factorization.

23908031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13238 (or 13231 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 23908031 is about 4889.5839291293. The cubic root of 23908031 is about 288.0809917210.

Adding to 23908031 its reverse (13080932), we get a palindrome (36988963).

The spelling of 23908031 in words is "twenty-three million, nine hundred eight thousand, thirty-one".