320312988 has 24 divisors (see below), whose sum is σ = 830441360. Its totient is φ = 106770960.

The previous prime is 320312983. The next prime is 320312989. The reversal of 320312988 is 889213023.

It is a happy number.

320312988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320312983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1482823 + ... + 1483038.

Almost surely, 2^320312988 is an apocalyptic number.

It is an amenable number.

320312988 is an abundant number, since it is smaller than the sum of its proper divisors (510128372).

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

320312988 is a wasteful number, since it uses less digits than its factorization.

320312988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965874 (or 2965866 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 320312988 is about 17897.2899624496. The cubic root of 320312988 is about 684.2133068186.

The spelling of 320312988 in words is "three hundred twenty million, three hundred twelve thousand, nine hundred eighty-eight".