320320344 has 16 divisors (see below), whose sum is σ = 800800920. Its totient is φ = 106773440.

The previous prime is 320320339. The next prime is 320320387. The reversal of 320320344 is 443023023.

It is a self number, because there is not a number n which added to its sum of digits gives 320320344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6673317 + ... + 6673364.

Almost surely, 2^320320344 is an apocalyptic number.

It is an amenable number.

320320344 is an abundant number, since it is smaller than the sum of its proper divisors (480480576).

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

320320344 is a wasteful number, since it uses less digits than its factorization.

320320344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13346690 (or 13346686 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 320320344 is about 17897.4954672435. The cubic root of 320320344 is about 684.2185444400.

Adding to 320320344 its reverse (443023023), we get a palindrome (763343367).

The spelling of 320320344 in words is "three hundred twenty million, three hundred twenty thousand, three hundred forty-four".