23198931 has 24 divisors (see below), whose sum is σ = 40551264. Its totient is φ = 12476160.

The previous prime is 23198909. The next prime is 23198941. The reversal of 23198931 is 13989132.

It is not a de Polignac number, because 23198931 - 2⁵ = 23198899 is a prime.

It is a super-2 number, since 2×23198931² = 1076380799085522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23198941) 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, 9760 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (1689636).

Almost surely, 2^23198931 is an apocalyptic number.

23198931 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23198931 is a deficient number, since it is larger than the sum of its proper divisors (17352333).

23198931 is a wasteful number, since it uses less digits than its factorization.

23198931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21691 (or 21688 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 23198931 is about 4816.5268607161. The cubic root of 23198931 is about 285.2042487861.

The spelling of 23198931 in words is "twenty-three million, one hundred ninety-eight thousand, nine hundred thirty-one".