231091874624 has 28 divisors (see below), whose sum is σ = 493847781924. Its totient is φ = 106657787904.

The previous prime is 231091874623. The next prime is 231091874639. The reversal of 231091874624 is 426478190132.

It can be written as a sum of positive squares in 2 ways, for example, as 123397638400 + 107694236224 = 351280^2 + 328168^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231091874623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138876497 + ... + 138878160.

It is an arithmetic number, because the mean of its divisors is an integer number (17637420783).

Almost surely, 2^231091874624 is an apocalyptic number.

It is an amenable number.

231091874624 is an abundant number, since it is smaller than the sum of its proper divisors (262755907300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231091874624 is a wasteful number, since it uses less digits than its factorization.

231091874624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277754682 (or 277754672 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 231091874624 in words is "two hundred thirty-one billion, ninety-one million, eight hundred seventy-four thousand, six hundred twenty-four".