31403751268 has 6 divisors (see below), whose sum is σ = 54956564726. Its totient is φ = 15701875632.

The previous prime is 31403751259. The next prime is 31403751283. The reversal of 31403751268 is 86215730413.

It can be written as a sum of positive squares in only one way, i.e., 17883177984 + 13520573284 = 133728^2 + 116278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31403751268.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3925468905 + ... + 3925468912.

Almost surely, 2^31403751268 is an apocalyptic number.

It is an amenable number.

31403751268 is a deficient number, since it is larger than the sum of its proper divisors (23552813458).

31403751268 is a wasteful number, since it uses less digits than its factorization.

31403751268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850937821 (or 7850937819 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 31403751268 in words is "thirty-one billion, four hundred three million, seven hundred fifty-one thousand, two hundred sixty-eight".