23181159 has 32 divisors (see below), whose sum is σ = 33926400. Its totient is φ = 14031360.

The previous prime is 23181133. The next prime is 23181161. The reversal of 23181159 is 95118132.

It is not a de Polignac number, because 23181159 - 2⁸ = 23180903 is a prime.

It is a super-2 number, since 2×23181159² = 1074732265166562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23181559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205087 + ... + 205199.

It is an arithmetic number, because the mean of its divisors is an integer number (1060200).

Almost surely, 2^23181159 is an apocalyptic number.

23181159 is a deficient number, since it is larger than the sum of its proper divisors (10745241).

23181159 is a wasteful number, since it uses less digits than its factorization.

23181159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its digits is 2160, while the sum is 30.

The square root of 23181159 is about 4814.6816094109. The cubic root of 23181159 is about 285.1314013954.

The spelling of 23181159 in words is "twenty-three million, one hundred eighty-one thousand, one hundred fifty-nine".