31816544804 has 12 divisors (see below), whose sum is σ = 60740676528. Its totient is φ = 14462065800.

The previous prime is 31816544777. The next prime is 31816544827. The reversal of 31816544804 is 40844561813.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 723103291 = 31816544804 / (3 + 1 + 8 + 1 + 6 + 5 + 4 + 4 + 8 + 0 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361551602 + ... + 361551689.

It is an arithmetic number, because the mean of its divisors is an integer number (5061723044).

Almost surely, 2^31816544804 is an apocalyptic number.

It is an amenable number.

31816544804 is a deficient number, since it is larger than the sum of its proper divisors (28924131724).

31816544804 is a wasteful number, since it uses less digits than its factorization.

31816544804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723103306 (or 723103304 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 31816544804 in words is "thirty-one billion, eight hundred sixteen million, five hundred forty-four thousand, eight hundred four".