231188981682 has 16 divisors (see below), whose sum is σ = 462626442432. Its totient is φ = 77021580720.

The previous prime is 231188981659. The next prime is 231188981687. The reversal of 231188981682 is 286189881132.

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 7 ways as a sum of consecutive naturals, for example, 10341198 + ... + 10363529.

It is an arithmetic number, because the mean of its divisors is an integer number (28914152652).

Almost surely, 2^231188981682 is an apocalyptic number.

231188981682 is an abundant number, since it is smaller than the sum of its proper divisors (231437460750).

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

231188981682 is a wasteful number, since it uses less digits than its factorization.

231188981682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20706593.

The product of its digits is 2654208, while the sum is 57.

The spelling of 231188981682 in words is "two hundred thirty-one billion, one hundred eighty-eight million, nine hundred eighty-one thousand, six hundred eighty-two".