31868226564 has 96 divisors (see below), whose sum is σ = 79558026240. Its totient is φ = 9904422528.

The previous prime is 31868226557. The next prime is 31868226583. The reversal of 31868226564 is 46562286813.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6489342 + ... + 6494250.

It is an arithmetic number, because the mean of its divisors is an integer number (828729440).

Almost surely, 2^31868226564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31868226564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39779013120).

31868226564 is an abundant number, since it is smaller than the sum of its proper divisors (47689799676).

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

31868226564 is a wasteful number, since it uses less digits than its factorization.

31868226564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5527 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The spelling of 31868226564 in words is "thirty-one billion, eight hundred sixty-eight million, two hundred twenty-six thousand, five hundred sixty-four".