231274594491 has 32 divisors (see below), whose sum is σ = 317838366720. Its totient is φ = 149513633664.

The previous prime is 231274594489. The next prime is 231274594543. The reversal of 231274594491 is 194495472132.

It is not a de Polignac number, because 231274594491 - 2¹ = 231274594489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231274594891) 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, 7130970 + ... + 7163328.

It is an arithmetic number, because the mean of its divisors is an integer number (9932448960).

Almost surely, 2^231274594491 is an apocalyptic number.

231274594491 is a deficient number, since it is larger than the sum of its proper divisors (86563772229).

231274594491 is a wasteful number, since it uses less digits than its factorization.

231274594491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32875.

The product of its digits is 2177280, while the sum is 51.

The spelling of 231274594491 in words is "two hundred thirty-one billion, two hundred seventy-four million, five hundred ninety-four thousand, four hundred ninety-one".