320312704 has 16 divisors (see below), whose sum is σ = 638123220. Its totient is φ = 160156288.

The previous prime is 320312693. The next prime is 320312723. The reversal of 320312704 is 407213023.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251094 + ... + 1251349.

Almost surely, 2^320312704 is an apocalyptic number.

It is an amenable number.

320312704 is a deficient number, since it is larger than the sum of its proper divisors (317810516).

320312704 is an equidigital number, since it uses as much as digits as its factorization.

320312704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502457 (or 2502445 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 320312704 is about 17897.2820282857. The cubic root of 320312704 is about 684.2131046032.

Adding to 320312704 its reverse (407213023), we get a palindrome (727525727).

The spelling of 320312704 in words is "three hundred twenty million, three hundred twelve thousand, seven hundred four".