231255172 has 12 divisors (see below), whose sum is σ = 404902876. Its totient is φ = 115568640.

The previous prime is 231255127. The next prime is 231255221. The reversal of 231255172 is 271552132.

It can be written as a sum of positive squares in 2 ways, for example, as 45914176 + 185340996 = 6776^2 + 13614^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 231255172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5229 + ... + 22132.

Almost surely, 2^231255172 is an apocalyptic number.

It is an amenable number.

231255172 is a deficient number, since it is larger than the sum of its proper divisors (173647704).

231255172 is a wasteful number, since it uses less digits than its factorization.

231255172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29478 (or 29476 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 231255172 is about 15207.0763791072. The cubic root of 231255172 is about 613.8050890277.

The spelling of 231255172 in words is "two hundred thirty-one million, two hundred fifty-five thousand, one hundred seventy-two".