31039800628 has 12 divisors (see below), whose sum is σ = 55644520932. Its totient is φ = 15141366080.

The previous prime is 31039800607. The next prime is 31039800641. The reversal of 31039800628 is 82600893013.

It can be written as a sum of positive squares in 2 ways, for example, as 1248350224 + 29791450404 = 35332^2 + 172602^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94633375 + ... + 94633702.

It is an arithmetic number, because the mean of its divisors is an integer number (4637043411).

Almost surely, 2^31039800628 is an apocalyptic number.

It is an amenable number.

31039800628 is a deficient number, since it is larger than the sum of its proper divisors (24604720304).

31039800628 is a wasteful number, since it uses less digits than its factorization.

31039800628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189267122 (or 189267120 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 31039800628 in words is "thirty-one billion, thirty-nine million, eight hundred thousand, six hundred twenty-eight".