231655156 has 12 divisors (see below), whose sum is σ = 413045892. Its totient is φ = 113642048.

The previous prime is 231655117. The next prime is 231655189. The reversal of 231655156 is 651556132.

231655156 is nontrivially palindromic in base 3.

231655156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 68326756 + 163328400 = 8266^2 + 12780^2 .

It is a super-2 number, since 2×231655156² = 107328222602768672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 546145 + ... + 546568.

It is an arithmetic number, because the mean of its divisors is an integer number (34420491).

Almost surely, 2^231655156 is an apocalyptic number.

It is an amenable number.

231655156 is a deficient number, since it is larger than the sum of its proper divisors (181390736).

231655156 is a wasteful number, since it uses less digits than its factorization.

231655156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092770 (or 1092768 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 231655156 is about 15220.2219431912. The cubic root of 231655156 is about 614.1587687612.

The spelling of 231655156 in words is "two hundred thirty-one million, six hundred fifty-five thousand, one hundred fifty-six".