31371136844 has 12 divisors (see below), whose sum is σ = 55040622000. Its totient is φ = 15645244848.

The previous prime is 31371136829. The next prime is 31371136861. The reversal of 31371136844 is 44863117313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10079144 + ... + 10082255.

It is an arithmetic number, because the mean of its divisors is an integer number (4586718500).

Almost surely, 2^31371136844 is an apocalyptic number.

It is an amenable number.

31371136844 is a deficient number, since it is larger than the sum of its proper divisors (23669485156).

31371136844 is a wasteful number, since it uses less digits than its factorization.

31371136844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20161792 (or 20161790 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The spelling of 31371136844 in words is "thirty-one billion, three hundred seventy-one million, one hundred thirty-six thousand, eight hundred forty-four".