23166931 has 2 divisors, whose sum is σ = 23166932. Its totient is φ = 23166930.

The previous prime is 23166917. The next prime is 23166943. The reversal of 23166931 is 13966132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23166931 is a prime.

It is a super-2 number, since 2×23166931² = 1073413383917522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23166893 and 23166902.

It is not a weakly prime, because it can be changed into another prime (23166901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11583465 + 11583466.

It is an arithmetic number, because the mean of its divisors is an integer number (11583466).

Almost surely, 2^23166931 is an apocalyptic number.

23166931 is a deficient number, since it is larger than the sum of its proper divisors (1).

23166931 is an equidigital number, since it uses as much as digits as its factorization.

23166931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 23166931 is about 4813.2038186638. The cubic root of 23166931 is about 285.0730540128.

The spelling of 23166931 in words is "twenty-three million, one hundred sixty-six thousand, nine hundred thirty-one".