23165997 has 16 divisors (see below), whose sum is σ = 32616960. Its totient is φ = 14584752.

The previous prime is 23165993. The next prime is 23165999. The reversal of 23165997 is 79956132.

It is not a de Polignac number, because 23165997 - 2² = 23165993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23165993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30808 + ... + 31550.

It is an arithmetic number, because the mean of its divisors is an integer number (2038560).

Almost surely, 2^23165997 is an apocalyptic number.

It is an amenable number.

23165997 is a deficient number, since it is larger than the sum of its proper divisors (9450963).

23165997 is a wasteful number, since it uses less digits than its factorization.

23165997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 102060, while the sum is 42.

The square root of 23165997 is about 4813.1067929145. The cubic root of 23165997 is about 285.0692229513.

The spelling of 23165997 in words is "twenty-three million, one hundred sixty-five thousand, nine hundred ninety-seven".