31275772904 has 8 divisors (see below), whose sum is σ = 58642074210. Its totient is φ = 15637886448.

The previous prime is 31275772897. The next prime is 31275772963. The reversal of 31275772904 is 40927757213.

It can be written as a sum of positive squares in only one way, i.e., 30251644900 + 1024128004 = 173930^2 + 32002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954735799 + ... + 1954735814.

Almost surely, 2^31275772904 is an apocalyptic number.

It is an amenable number.

31275772904 is a deficient number, since it is larger than the sum of its proper divisors (27366301306).

31275772904 is a wasteful number, since it uses less digits than its factorization.

31275772904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909471619 (or 3909471615 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 31275772904 in words is "thirty-one billion, two hundred seventy-five million, seven hundred seventy-two thousand, nine hundred four".