31872058644 has 48 divisors (see below), whose sum is σ = 78639515136. Its totient is φ = 10030540800.

The previous prime is 31872058627. The next prime is 31872058657. The reversal of 31872058644 is 44685027813.

It is a junction number, because it is equal to n+sod(n) for n = 31872058593 and 31872058602.

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 15 ways as a sum of consecutive naturals, for example, 1029597 + ... + 1060100.

It is an arithmetic number, because the mean of its divisors is an integer number (1638323232).

Almost surely, 2^31872058644 is an apocalyptic number.

It is an amenable number.

31872058644 is an abundant number, since it is smaller than the sum of its proper divisors (46767456492).

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

31872058644 is a wasteful number, since it uses less digits than its factorization.

31872058644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089776 (or 2089774 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 31872058644 in words is "thirty-one billion, eight hundred seventy-two million, fifty-eight thousand, six hundred forty-four".