31699994324 has 12 divisors (see below), whose sum is σ = 55983935700. Its totient is φ = 15704584128.

The previous prime is 31699994323. The next prime is 31699994357. The reversal of 31699994324 is 42349999613.

It can be written as a sum of positive squares in 2 ways, for example, as 10819744324 + 20880250000 = 104018^2 + 144500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31699994321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36352769 + ... + 36353640.

It is an arithmetic number, because the mean of its divisors is an integer number (4665327975).

Almost surely, 2^31699994324 is an apocalyptic number.

It is an amenable number.

31699994324 is a deficient number, since it is larger than the sum of its proper divisors (24283941376).

31699994324 is a wasteful number, since it uses less digits than its factorization.

31699994324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706522 (or 72706520 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 59.

The spelling of 31699994324 in words is "thirty-one billion, six hundred ninety-nine million, nine hundred ninety-four thousand, three hundred twenty-four".