31078704768 has 256 divisors, whose sum is σ = 91172822400. Its totient is φ = 9339273216.

The previous prime is 31078704737. The next prime is 31078704779. The reversal of 31078704768 is 86740787013.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 31078704768.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14876268 + ... + 14878356.

Almost surely, 2^31078704768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31078704768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45586411200).

31078704768 is an abundant number, since it is smaller than the sum of its proper divisors (60094117632).

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

31078704768 is a wasteful number, since it uses less digits than its factorization.

31078704768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 31078704768 in words is "thirty-one billion, seventy-eight million, seven hundred four thousand, seven hundred sixty-eight".