31899662990 has 16 divisors (see below), whose sum is σ = 61836270048. Its totient is φ = 11778337056.

The previous prime is 31899662983. The next prime is 31899663011. The reversal of 31899662990 is 9926699813.

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, 122690882 + ... + 122691141.

It is an arithmetic number, because the mean of its divisors is an integer number (3864766878).

Almost surely, 2^31899662990 is an apocalyptic number.

31899662990 is a deficient number, since it is larger than the sum of its proper divisors (29936607058).

31899662990 is a wasteful number, since it uses less digits than its factorization.

31899662990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245382043.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 31899662990 in words is "thirty-one billion, eight hundred ninety-nine million, six hundred sixty-two thousand, nine hundred ninety".