31999495344 has 40 divisors (see below), whose sum is σ = 82672111920. Its totient is φ = 10665627648.

The previous prime is 31999495343. The next prime is 31999495357. The reversal of 31999495344 is 44359499913.

It is not an unprimeable number, because it can be changed into a prime (31999495343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 875712 + ... + 911520.

It is an arithmetic number, because the mean of its divisors is an integer number (2066802798).

Almost surely, 2^31999495344 is an apocalyptic number.

It is an amenable number.

31999495344 is an abundant number, since it is smaller than the sum of its proper divisors (50672616576).

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

31999495344 is a wasteful number, since it uses less digits than its factorization.

31999495344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54437 (or 54431 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 60.

The spelling of 31999495344 in words is "thirty-one billion, nine hundred ninety-nine million, four hundred ninety-five thousand, three hundred forty-four".