31987910608 has 20 divisors (see below), whose sum is σ = 62030458368. Its totient is φ = 15980050400.

The previous prime is 31987910593. The next prime is 31987910609. The reversal of 31987910608 is 80601978913.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31987910609) 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 3 ways as a sum of consecutive naturals, for example, 850066 + ... + 886897.

Almost surely, 2^31987910608 is an apocalyptic number.

It is an amenable number.

31987910608 is a deficient number, since it is larger than the sum of its proper divisors (30042547760).

31987910608 is a wasteful number, since it uses less digits than its factorization.

31987910608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738122 (or 1738116 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 31987910608 in words is "thirty-one billion, nine hundred eighty-seven million, nine hundred ten thousand, six hundred eight".