31084990 has 32 divisors (see below), whose sum is σ = 57451680. Its totient is φ = 12105600.

The previous prime is 31084981. The next prime is 31085053. The reversal of 31084990 is 9948013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79716 + ... + 80104.

It is an arithmetic number, because the mean of its divisors is an integer number (1795365).

Almost surely, 2^31084990 is an apocalyptic number.

31084990 is a deficient number, since it is larger than the sum of its proper divisors (26366690).

31084990 is a wasteful number, since it uses less digits than its factorization.

31084990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 31084990 is about 5575.3914660766. The cubic root of 31084990 is about 314.4248849401.

The spelling of 31084990 in words is "thirty-one million, eighty-four thousand, nine hundred ninety".