31887643068852 has 24 divisors (see below), whose sum is σ = 74615278125696. Its totient is φ = 10599103266048.

The previous prime is 31887643068829. The next prime is 31887643068863. The reversal of 31887643068852 is 25886034678813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3763881868 + ... + 3763890339.

It is an arithmetic number, because the mean of its divisors is an integer number (3108969921904).

Almost surely, 2^{31887643068852} is an apocalyptic number.

It is an amenable number.

31887643068852 is an abundant number, since it is smaller than the sum of its proper divisors (42727635056844).

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

31887643068852 is a wasteful number, since it uses less digits than its factorization.

31887643068852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527772567 (or 7527772565 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 69.

The spelling of 31887643068852 in words is "thirty-one trillion, eight hundred eighty-seven billion, six hundred forty-three million, sixty-eight thousand, eight hundred fifty-two".