320310320 has 40 divisors (see below), whose sum is σ = 812425680. Its totient is φ = 116476160.

The previous prime is 320310313. The next prime is 320310337. The reversal of 320310320 is 23013023.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 320310295 and 320310304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181115 + ... + 182874.

It is an arithmetic number, because the mean of its divisors is an integer number (20310642).

Almost surely, 2^320310320 is an apocalyptic number.

It is an amenable number.

320310320 is an abundant number, since it is smaller than the sum of its proper divisors (492115360).

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

320310320 is a wasteful number, since it uses less digits than its factorization.

320310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364013 (or 364007 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 320310320 is about 17897.2154258700. The cubic root of 320310320 is about 684.2114071285.

Adding to 320310320 its reverse (23013023), we get a palindrome (343323343).

The spelling of 320310320 in words is "three hundred twenty million, three hundred ten thousand, three hundred twenty".