23173231 has 2 divisors, whose sum is σ = 23173232. Its totient is φ = 23173230.

The previous prime is 23173181. The next prime is 23173237. The reversal of 23173231 is 13237132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23173231 - 2⁹ = 23172719 is a prime.

It is a super-2 number, since 2×23173231² = 1073997269958722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23173237) 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 as a sum of consecutive naturals, namely, 11586615 + 11586616.

It is an arithmetic number, because the mean of its divisors is an integer number (11586616).

Almost surely, 2^23173231 is an apocalyptic number.

23173231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23173231 is an equidigital number, since it uses as much as digits as its factorization.

23173231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 22.

The square root of 23173231 is about 4813.8582239198. The cubic root of 23173231 is about 285.0988925305.

The spelling of 23173231 in words is "twenty-three million, one hundred seventy-three thousand, two hundred thirty-one".