320312982 has 64 divisors (see below), whose sum is σ = 740275200. Its totient is φ = 91378080.

The previous prime is 320312969. The next prime is 320312983. The reversal of 320312982 is 289213023.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 223753 + ... + 225179.

It is an arithmetic number, because the mean of its divisors is an integer number (11566800).

Almost surely, 2^320312982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320312982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370137600).

320312982 is an abundant number, since it is smaller than the sum of its proper divisors (419962218).

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

320312982 is a wasteful number, since it uses less digits than its factorization.

320312982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 320312982 is about 17897.2897948265. The cubic root of 320312982 is about 684.2133025464.

The spelling of 320312982 in words is "three hundred twenty million, three hundred twelve thousand, nine hundred eighty-two".