231997547682 has 16 divisors (see below), whose sum is σ = 515550106080. Its totient is φ = 77332515876.

The previous prime is 231997547681. The next prime is 231997547773. The reversal of 231997547682 is 286745799132.

231997547682 is a `hidden beast` number, since 2 + 3 + 1 + 9 + 9 + 7 + 547 + 6 + 82 = 666.

It is not an unprimeable number, because it can be changed into a prime (231997547681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148125388 + ... + 2148125495.

It is an arithmetic number, because the mean of its divisors is an integer number (32221881630).

Almost surely, 2^231997547682 is an apocalyptic number.

231997547682 is an abundant number, since it is smaller than the sum of its proper divisors (283552558398).

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

231997547682 is a wasteful number, since it uses less digits than its factorization.

231997547682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296250894 (or 4296250888 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 231997547682 in words is "two hundred thirty-one billion, nine hundred ninety-seven million, five hundred forty-seven thousand, six hundred eighty-two".