231254331 has 32 divisors (see below), whose sum is σ = 385191936. Its totient is φ = 119892000.

The previous prime is 231254321. The next prime is 231254341. The reversal of 231254331 is 133452132.

It is an interprime number because it is at equal distance from previous prime (231254321) and next prime (231254341).

It is not a de Polignac number, because 231254331 - 2⁶ = 231254267 is a prime.

It is a super-2 number, since 2×231254331² = 106957131212515122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231254311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223786 + ... + 224816.

It is an arithmetic number, because the mean of its divisors is an integer number (12037248).

Almost surely, 2^231254331 is an apocalyptic number.

231254331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231254331 is a deficient number, since it is larger than the sum of its proper divisors (153937605).

231254331 is a wasteful number, since it uses less digits than its factorization.

231254331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its digits is 2160, while the sum is 24.

The square root of 231254331 is about 15207.0487274816. The cubic root of 231254331 is about 613.8043449569.

The spelling of 231254331 in words is "two hundred thirty-one million, two hundred fifty-four thousand, three hundred thirty-one".