31841351664 has 40 divisors (see below), whose sum is σ = 84479987280. Its totient is φ = 10326924288.

The previous prime is 31841351623. The next prime is 31841351699. The reversal of 31841351664 is 46615314813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8962569 + ... + 8966120.

It is an arithmetic number, because the mean of its divisors is an integer number (2111999682).

Almost surely, 2^31841351664 is an apocalyptic number.

It is an amenable number.

31841351664 is an abundant number, since it is smaller than the sum of its proper divisors (52638635616).

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

31841351664 is a wasteful number, since it uses less digits than its factorization.

31841351664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17928737 (or 17928731 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The spelling of 31841351664 in words is "thirty-one billion, eight hundred forty-one million, three hundred fifty-one thousand, six hundred sixty-four".