23165291 has 2 divisors, whose sum is σ = 23165292. Its totient is φ = 23165290.

The previous prime is 23165281. The next prime is 23165297. The reversal of 23165291 is 19256132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23165291 - 2⁶ = 23165227 is a prime.

It is a super-2 number, since 2×23165291² = 1073261414229362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23165297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11582645 + 11582646.

It is an arithmetic number, because the mean of its divisors is an integer number (11582646).

Almost surely, 2^23165291 is an apocalyptic number.

23165291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23165291 is an equidigital number, since it uses as much as digits as its factorization.

23165291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 23165291 is about 4813.0334509538. The cubic root of 23165291 is about 285.0663270271.

The spelling of 23165291 in words is "twenty-three million, one hundred sixty-five thousand, two hundred ninety-one".