31968367168 has 14 divisors (see below), whose sum is σ = 63437228726. Its totient is φ = 15984183552.

The previous prime is 31968367159. The next prime is 31968367177. The reversal of 31968367168 is 86176386913.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31968367159) and next prime (31968367177).

It can be written as a sum of positive squares in only one way, i.e., 16080268864 + 15888098304 = 126808^2 + 126048^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249752805 + ... + 249752932.

Almost surely, 2^31968367168 is an apocalyptic number.

It is an amenable number.

31968367168 is a deficient number, since it is larger than the sum of its proper divisors (31468861558).

31968367168 is an equidigital number, since it uses as much as digits as its factorization.

31968367168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499505749 (or 499505739 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 31968367168 in words is "thirty-one billion, nine hundred sixty-eight million, three hundred sixty-seven thousand, one hundred sixty-eight".