257853231 has 12 divisors (see below), whose sum is σ = 375752208. Its totient is φ = 170380224.

The previous prime is 257853221. The next prime is 257853269. The reversal of 257853231 is 132358752.

It is a happy number.

257853231 is a `hidden beast` number, since 2 + 578 + 53 + 2 + 31 = 666.

It is not a de Polignac number, because 257853231 - 2¹⁰ = 257852207 is a prime.

It is a super-2 number, since 2×257853231² = 132976577474278722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257853221) 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, 125755 + ... + 127788.

It is an arithmetic number, because the mean of its divisors is an integer number (31312684).

Almost surely, 2^257853231 is an apocalyptic number.

257853231 is a deficient number, since it is larger than the sum of its proper divisors (117898977).

257853231 is a wasteful number, since it uses less digits than its factorization.

257853231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253662 (or 253659 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 257853231 is about 16057.8090348590. The cubic root of 257853231 is about 636.4889366508.

The spelling of 257853231 in words is "two hundred fifty-seven million, eight hundred fifty-three thousand, two hundred thirty-one".