31969620168 has 16 divisors (see below), whose sum is σ = 79924050480. Its totient is φ = 10656540048.

The previous prime is 31969620167. The next prime is 31969620187. The reversal of 31969620168 is 86102696913.

It is a super-2 number, since 2×31969620168² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31969620168.

It is not an unprimeable number, because it can be changed into a prime (31969620167) 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, 666033730 + ... + 666033777.

It is an arithmetic number, because the mean of its divisors is an integer number (4995253155).

Almost surely, 2^31969620168 is an apocalyptic number.

It is an amenable number.

31969620168 is an abundant number, since it is smaller than the sum of its proper divisors (47954430312).

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

31969620168 is a wasteful number, since it uses less digits than its factorization.

31969620168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332067516 (or 1332067512 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 31969620168 in words is "thirty-one billion, nine hundred sixty-nine million, six hundred twenty thousand, one hundred sixty-eight".