31125373506 has 24 divisors (see below), whose sum is σ = 67441561200. Its totient is φ = 10374624216.

The previous prime is 31125373493. The next prime is 31125373523. The reversal of 31125373506 is 60537352113.

31125373506 is a `hidden beast` number, since 3 + 112 + 5 + 37 + 3 + 506 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674241 + ... + 718923.

It is an arithmetic number, because the mean of its divisors is an integer number (2810065050).

Almost surely, 2^31125373506 is an apocalyptic number.

31125373506 is an abundant number, since it is smaller than the sum of its proper divisors (36316187694).

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

31125373506 is a wasteful number, since it uses less digits than its factorization.

31125373506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83390 (or 83387 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The spelling of 31125373506 in words is "thirty-one billion, one hundred twenty-five million, three hundred seventy-three thousand, five hundred six".