31371645044 has 12 divisors (see below), whose sum is σ = 54914766144. Its totient is φ = 15681711864.

The previous prime is 31371645017. The next prime is 31371645059. The reversal of 31371645044 is 44054617313.

It is a super-2 number, since 2×31371645044² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31371644989 and 31371645007.

It is a congruent number.

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, 1010462 + ... + 1041045.

It is an arithmetic number, because the mean of its divisors is an integer number (4576230512).

Almost surely, 2^31371645044 is an apocalyptic number.

It is an amenable number.

31371645044 is a deficient number, since it is larger than the sum of its proper divisors (23543121100).

31371645044 is a wasteful number, since it uses less digits than its factorization.

31371645044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055334 (or 2055332 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 31371645044 in words is "thirty-one billion, three hundred seventy-one million, six hundred forty-five thousand, forty-four".