231993940368 has 80 divisors (see below), whose sum is σ = 600967884800. Its totient is φ = 77118687360.

The previous prime is 231993940351. The next prime is 231993940417. The reversal of 231993940368 is 863049399132.

It is a happy number.

It is a super-2 number, since 2×231993940368² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29440653 + ... + 29448531.

It is an arithmetic number, because the mean of its divisors is an integer number (7512098560).

Almost surely, 2^231993940368 is an apocalyptic number.

It is an amenable number.

231993940368 is an abundant number, since it is smaller than the sum of its proper divisors (368973944432).

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

231993940368 is a wasteful number, since it uses less digits than its factorization.

231993940368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9500 (or 9494 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 57.

The spelling of 231993940368 in words is "two hundred thirty-one billion, nine hundred ninety-three million, nine hundred forty thousand, three hundred sixty-eight".