23372991 has 12 divisors (see below), whose sum is σ = 35229168. Its totient is φ = 14904384.

The previous prime is 23372981. The next prime is 23373001. The reversal of 23372991 is 19927332.

It is an interprime number because it is at equal distance from previous prime (23372981) and next prime (23373001).

It is not a de Polignac number, because 23372991 - 2¹⁷ = 23241919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23372981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56250 + ... + 56663.

It is an arithmetic number, because the mean of its divisors is an integer number (2935764).

Almost surely, 2^23372991 is an apocalyptic number.

23372991 is a deficient number, since it is larger than the sum of its proper divisors (11856177).

23372991 is a wasteful number, since it uses less digits than its factorization.

23372991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112942 (or 112939 counting only the distinct ones).

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

The square root of 23372991 is about 4834.5621311552. The cubic root of 23372991 is about 285.9157616189.

The spelling of 23372991 in words is "twenty-three million, three hundred seventy-two thousand, nine hundred ninety-one".