320311304 has 16 divisors (see below), whose sum is σ = 600791100. Its totient is φ = 160100352.

The previous prime is 320311283. The next prime is 320311307. The reversal of 320311304 is 403113023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 309408100 + 10903204 = 17590^2 + 3302^2 .

It is not an unprimeable number, because it can be changed into a prime (320311307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28184 + ... + 37880.

Almost surely, 2^320311304 is an apocalyptic number.

It is an amenable number.

320311304 is a deficient number, since it is larger than the sum of its proper divisors (280479796).

320311304 is a wasteful number, since it uses less digits than its factorization.

320311304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13832 (or 13828 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320311304 is about 17897.2429161589. The cubic root of 320311304 is about 684.2121077651.

Adding to 320311304 its reverse (403113023), we get a palindrome (723424327).

The spelling of 320311304 in words is "three hundred twenty million, three hundred eleven thousand, three hundred four".