231681919374 has 12 divisors (see below), whose sum is σ = 501977492016. Its totient is φ = 77227306452.

The previous prime is 231681919327. The next prime is 231681919411. The reversal of 231681919374 is 473919186132.

231681919374 is a `hidden beast` number, since 23 + 1 + 68 + 191 + 9 + 374 = 666.

231681919374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231681919374.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6435608854 + ... + 6435608889.

It is an arithmetic number, because the mean of its divisors is an integer number (41831457668).

Almost surely, 2^231681919374 is an apocalyptic number.

231681919374 is an abundant number, since it is smaller than the sum of its proper divisors (270295572642).

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

231681919374 is a wasteful number, since it uses less digits than its factorization.

231681919374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12871217751 (or 12871217748 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 231681919374 in words is "two hundred thirty-one billion, six hundred eighty-one million, nine hundred nineteen thousand, three hundred seventy-four".