31391799682 has 16 divisors (see below), whose sum is σ = 47859608160. Its totient is φ = 15440220832.

The previous prime is 31391799661. The next prime is 31391799721. The reversal of 31391799682 is 28699719313.

It is a super-2 number, since 2×31391799682² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 367132 + ... + 444487.

It is an arithmetic number, because the mean of its divisors is an integer number (2991225510).

Almost surely, 2^31391799682 is an apocalyptic number.

31391799682 is a deficient number, since it is larger than the sum of its proper divisors (16467808478).

31391799682 is a wasteful number, since it uses less digits than its factorization.

31391799682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811937.

The product of its digits is 4408992, while the sum is 58.

The spelling of 31391799682 in words is "thirty-one billion, three hundred ninety-one million, seven hundred ninety-nine thousand, six hundred eighty-two".