31031516968 has 16 divisors (see below), whose sum is σ = 58196020500. Its totient is φ = 15512578176.

The previous prime is 31031516959. The next prime is 31031516969. The reversal of 31031516968 is 86961513013.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31004870724 + 26646244 = 176082^2 + 5162^2 .

It is not an unprimeable number, because it can be changed into a prime (31031516969) 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, 355813 + ... + 434356.

Almost surely, 2^31031516968 is an apocalyptic number.

It is an amenable number.

31031516968 is a deficient number, since it is larger than the sum of its proper divisors (27164503532).

31031516968 is a wasteful number, since it uses less digits than its factorization.

31031516968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795084 (or 795080 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 31031516968 in words is "thirty-one billion, thirty-one million, five hundred sixteen thousand, nine hundred sixty-eight".