231356457 has 12 divisors (see below), whose sum is σ = 334414704. Its totient is φ = 154130040.

The previous prime is 231356453. The next prime is 231356467. The reversal of 231356457 is 754653132.

231356457 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 5 + 645 + 7 = 666.

It is not a de Polignac number, because 231356457 - 2² = 231356453 is a prime.

It is a hoax number, since the sum of its digits (36) 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 (231356453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5958 + ... + 22320.

It is an arithmetic number, because the mean of its divisors is an integer number (27867892).

Almost surely, 2^231356457 is an apocalyptic number.

It is an amenable number.

231356457 is a deficient number, since it is larger than the sum of its proper divisors (103058247).

231356457 is a wasteful number, since it uses less digits than its factorization.

231356457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17940 (or 17937 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 231356457 is about 15210.4062075935. The cubic root of 231356457 is about 613.8946872752.

It can be divided in two parts, 23135 and 6457, that added together give a palindrome (29592).

The spelling of 231356457 in words is "two hundred thirty-one million, three hundred fifty-six thousand, four hundred fifty-seven".