231056155 has 12 divisors (see below), whose sum is σ = 304765776. Its totient is φ = 168040400.

The previous prime is 231056143. The next prime is 231056159. The reversal of 231056155 is 551650132.

It is a de Polignac number, because none of the positive numbers 2^k-231056155 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231056159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190351 + ... + 191560.

It is an arithmetic number, because the mean of its divisors is an integer number (25397148).

Almost surely, 2^231056155 is an apocalyptic number.

231056155 is a deficient number, since it is larger than the sum of its proper divisors (73709621).

231056155 is a wasteful number, since it uses less digits than its factorization.

231056155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381938 (or 381927 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 231056155 is about 15200.5314051845. The cubic root of 231056155 is about 613.6289593354.

The spelling of 231056155 in words is "two hundred thirty-one million, fifty-six thousand, one hundred fifty-five".