231856353 has 48 divisors (see below), whose sum is σ = 379282176. Its totient is φ = 135674880.

The previous prime is 231856283. The next prime is 231856379. The reversal of 231856353 is 353658132.

231856353 is a `hidden beast` number, since 2 + 3 + 18 + 5 + 635 + 3 = 666.

It is not a de Polignac number, because 231856353 - 2¹⁶ = 231790817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231856553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143476 + ... + 145082.

It is an arithmetic number, because the mean of its divisors is an integer number (7901712).

Almost surely, 2^231856353 is an apocalyptic number.

231856353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231856353 is a deficient number, since it is larger than the sum of its proper divisors (147425823).

231856353 is a wasteful number, since it uses less digits than its factorization.

231856353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1691 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 231856353 is about 15226.8300377984. The cubic root of 231856353 is about 614.3365202487.

The spelling of 231856353 in words is "two hundred thirty-one million, eight hundred fifty-six thousand, three hundred fifty-three".