311080990 has 32 divisors (see below), whose sum is σ = 612209664. Its totient is φ = 112868640.

The previous prime is 311080967. The next prime is 311081041. The reversal of 311080990 is 99080113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50667 + ... + 56473.

It is an arithmetic number, because the mean of its divisors is an integer number (19131552).

Almost surely, 2^311080990 is an apocalyptic number.

311080990 is a deficient number, since it is larger than the sum of its proper divisors (301128674).

311080990 is a wasteful number, since it uses less digits than its factorization.

311080990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 311080990 is about 17637.4881998543. The cubic root of 311080990 is about 677.5757026558.

It can be divided in two parts, 3110 and 80990, that added together give a square (84100 = 290²).

The spelling of 311080990 in words is "three hundred eleven million, eighty thousand, nine hundred ninety".