31680387202 has 16 divisors (see below), whose sum is σ = 47583777600. Its totient is φ = 15819145200.

The previous prime is 31680387187. The next prime is 31680387203. The reversal of 31680387202 is 20278308613.

It is not an unprimeable number, because it can be changed into a prime (31680387203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6269577 + ... + 6274627.

It is an arithmetic number, because the mean of its divisors is an integer number (2973986100).

Almost surely, 2^31680387202 is an apocalyptic number.

31680387202 is a deficient number, since it is larger than the sum of its proper divisors (15903390398).

31680387202 is a wasteful number, since it uses less digits than its factorization.

31680387202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 31680387202 in words is "thirty-one billion, six hundred eighty million, three hundred eighty-seven thousand, two hundred two".