31680476679 has 16 divisors (see below), whose sum is σ = 43083568224. Its totient is φ = 20699702400.

The previous prime is 31680476677. The next prime is 31680476719. The reversal of 31680476679 is 97667408613.

It is not a de Polignac number, because 31680476679 - 2¹ = 31680476677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31680476677) 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 15 ways as a sum of consecutive naturals, for example, 43749 + ... + 255489.

It is an arithmetic number, because the mean of its divisors is an integer number (2692723014).

Almost surely, 2^31680476679 is an apocalyptic number.

31680476679 is a deficient number, since it is larger than the sum of its proper divisors (11403091545).

31680476679 is a wasteful number, since it uses less digits than its factorization.

31680476679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212738.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 31680476679 in words is "thirty-one billion, six hundred eighty million, four hundred seventy-six thousand, six hundred seventy-nine".