31120790472 has 24 divisors (see below), whose sum is σ = 84285474390. Its totient is φ = 10373596800.

The previous prime is 31120790431. The next prime is 31120790507. The reversal of 31120790472 is 27409702113.

31120790472 is a `hidden beast` number, since 3 + 112 + 0 + 79 + 0 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25149519396 + 5971271076 = 158586^2 + 77274^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216116529 + ... + 216116672.

Almost surely, 2^31120790472 is an apocalyptic number.

It is an amenable number.

31120790472 is an abundant number, since it is smaller than the sum of its proper divisors (53164683918).

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

31120790472 is a wasteful number, since it uses less digits than its factorization.

31120790472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432233213 (or 432233206 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 31120790472 in words is "thirty-one billion, one hundred twenty million, seven hundred ninety thousand, four hundred seventy-two".