318990940 has 24 divisors (see below), whose sum is σ = 678363840. Its totient is φ = 125980608.

The previous prime is 318990929. The next prime is 318990983. The reversal of 318990940 is 49099813.

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 7 ways as a sum of consecutive naturals, for example, 99367 + ... + 102526.

It is an arithmetic number, because the mean of its divisors is an integer number (28265160).

Almost surely, 2^318990940 is an apocalyptic number.

It is an amenable number.

318990940 is an abundant number, since it is smaller than the sum of its proper divisors (359372900).

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

318990940 is a wasteful number, since it uses less digits than its factorization.

318990940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201981 (or 201979 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 318990940 is about 17860.3174663834. The cubic root of 318990940 is about 683.2706765208.

The spelling of 318990940 in words is "three hundred eighteen million, nine hundred ninety thousand, nine hundred forty".