231968918168 has 32 divisors (see below), whose sum is σ = 483508421760. Its totient is φ = 103608944640.

The previous prime is 231968918099. The next prime is 231968918179. The reversal of 231968918168 is 861819869132.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 231968918168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35972105 + ... + 35978552.

It is an arithmetic number, because the mean of its divisors is an integer number (15109638180).

Almost surely, 2^231968918168 is an apocalyptic number.

It is an amenable number.

231968918168 is an abundant number, since it is smaller than the sum of its proper divisors (251539503592).

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

231968918168 is a wasteful number, since it uses less digits than its factorization.

231968918168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71950707 (or 71950703 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The spelling of 231968918168 in words is "two hundred thirty-one billion, nine hundred sixty-eight million, nine hundred eighteen thousand, one hundred sixty-eight".