232155231 has 32 divisors (see below), whose sum is σ = 394149888. Its totient is φ = 118028640.

The previous prime is 232155227. The next prime is 232155251. The reversal of 232155231 is 132551232.

It is a happy number.

It is not a de Polignac number, because 232155231 - 2² = 232155227 is a prime.

It is a super-2 number, since 2×232155231² = 107792102561326722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232155221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166 + ... + 21548.

It is an arithmetic number, because the mean of its divisors is an integer number (12317184).

Almost surely, 2^232155231 is an apocalyptic number.

232155231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

232155231 is a deficient number, since it is larger than the sum of its proper divisors (161994657).

232155231 is a wasteful number, since it uses less digits than its factorization.

232155231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21451.

The product of its digits is 1800, while the sum is 24.

The square root of 232155231 is about 15236.6410668493. The cubic root of 232155231 is about 614.6003802188.

The spelling of 232155231 in words is "two hundred thirty-two million, one hundred fifty-five thousand, two hundred thirty-one".