31687370634 has 16 divisors (see below), whose sum is σ = 63621338688. Its totient is φ = 10521357312.

The previous prime is 31687370623. The next prime is 31687370639. The reversal of 31687370634 is 43607378613.

It is not an unprimeable number, because it can be changed into a prime (31687370639) 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 7 ways as a sum of consecutive naturals, for example, 10273222 + ... + 10276305.

It is an arithmetic number, because the mean of its divisors is an integer number (3976333668).

Almost surely, 2^31687370634 is an apocalyptic number.

31687370634 is an abundant number, since it is smaller than the sum of its proper divisors (31933968054).

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

31687370634 is a wasteful number, since it uses less digits than its factorization.

31687370634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20549789.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 31687370634 in words is "thirty-one billion, six hundred eighty-seven million, three hundred seventy thousand, six hundred thirty-four".