316820990 has 16 divisors (see below), whose sum is σ = 583540848. Its totient is φ = 123781056.

The previous prime is 316820963. The next prime is 316821017. The reversal of 316820990 is 99028613.

It is an interprime number because it is at equal distance from previous prime (316820963) and next prime (316821017).

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 in 7 ways as a sum of consecutive naturals, for example, 367967 + ... + 368826.

It is an arithmetic number, because the mean of its divisors is an integer number (36471303).

Almost surely, 2^316820990 is an apocalyptic number.

316820990 is a deficient number, since it is larger than the sum of its proper divisors (266719858).

316820990 is a wasteful number, since it uses less digits than its factorization.

316820990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736843.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 316820990 is about 17799.4660032261. The cubic root of 316820990 is about 681.7178237150.

The spelling of 316820990 in words is "three hundred sixteen million, eight hundred twenty thousand, nine hundred ninety".