31885253872 has 10 divisors (see below), whose sum is σ = 61777679408. Its totient is φ = 15942626928.

The previous prime is 31885253789. The next prime is 31885253899. The reversal of 31885253872 is 27835258813.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 996414168 + ... + 996414199.

Almost surely, 2^31885253872 is an apocalyptic number.

It is an amenable number.

31885253872 is a deficient number, since it is larger than the sum of its proper divisors (29892425536).

31885253872 is a wasteful number, since it uses less digits than its factorization.

31885253872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992828375 (or 1992828369 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 52.

The spelling of 31885253872 in words is "thirty-one billion, eight hundred eighty-five million, two hundred fifty-three thousand, eight hundred seventy-two".