31530135604 has 24 divisors (see below), whose sum is σ = 60509062656. Its totient is φ = 14256840000.

The previous prime is 31530135589. The next prime is 31530135647. The reversal of 31530135604 is 40653103513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867497 + ... + 1884304.

It is an arithmetic number, because the mean of its divisors is an integer number (2521210944).

Almost surely, 2^31530135604 is an apocalyptic number.

It is an amenable number.

31530135604 is a deficient number, since it is larger than the sum of its proper divisors (28978927052).

31530135604 is a wasteful number, since it uses less digits than its factorization.

31530135604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752007 (or 3752005 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 31530135604 in words is "thirty-one billion, five hundred thirty million, one hundred thirty-five thousand, six hundred four".