231188981684 has 12 divisors (see below), whose sum is σ = 404586187908. Its totient is φ = 115592928000.

The previous prime is 231188981659. The next prime is 231188981687. The reversal of 231188981684 is 486189881132.

231188981684 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133268803600 + 97920178084 = 365060^2 + 312922^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231188981687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18467 + ... + 680234.

It is an arithmetic number, because the mean of its divisors is an integer number (33715515659).

Almost surely, 2^231188981684 is an apocalyptic number.

It is an amenable number.

231188981684 is a deficient number, since it is larger than the sum of its proper divisors (173397206224).

231188981684 is a wasteful number, since it uses less digits than its factorization.

231188981684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781426 (or 781424 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 59.

The spelling of 231188981684 in words is "two hundred thirty-one billion, one hundred eighty-eight million, nine hundred eighty-one thousand, six hundred eighty-four".