231265251 has 18 divisors (see below), whose sum is σ = 388589292. Its totient is φ = 132151320.

The previous prime is 231265211. The next prime is 231265261. The reversal of 231265251 is 152562132.

It is a happy number.

231265251 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 652 + 5 + 1 = 666.

It is not a de Polignac number, because 231265251 - 2⁶ = 231265187 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (231265201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 261765 + ... + 262646.

It is an arithmetic number, because the mean of its divisors is an integer number (21588294).

Almost surely, 2^231265251 is an apocalyptic number.

231265251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231265251 is a deficient number, since it is larger than the sum of its proper divisors (157324041).

231265251 is a wasteful number, since it uses less digits than its factorization.

231265251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524431 (or 524421 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 231265251 is about 15207.4077672692. The cubic root of 231265251 is about 613.8140062360.

The spelling of 231265251 in words is "two hundred thirty-one million, two hundred sixty-five thousand, two hundred fifty-one".