31861970304 has 48 divisors (see below), whose sum is σ = 84642650820. Its totient is φ = 10619490816.

The previous prime is 31861970281. The next prime is 31861970317. The reversal of 31861970304 is 40307916813.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 3493302 + ... + 3502410.

Almost surely, 2^31861970304 is an apocalyptic number.

It is an amenable number.

31861970304 is an abundant number, since it is smaller than the sum of its proper divisors (52780680516).

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

31861970304 is an frugal number, since it uses more digits than its factorization.

31861970304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235 (or 9114 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 31861970304 in words is "thirty-one billion, eight hundred sixty-one million, nine hundred seventy thousand, three hundred four".