320401204 has 24 divisors (see below), whose sum is σ = 579566120. Its totient is φ = 154866816.

The previous prime is 320401181. The next prime is 320401223. The reversal of 320401204 is 402104023.

It can be written as a sum of positive squares in 4 ways, for example, as 171610000 + 148791204 = 13100^2 + 12198^2 .

It is a congruent number.

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, 16342 + ... + 30130.

Almost surely, 2^320401204 is an apocalyptic number.

It is an amenable number.

320401204 is a deficient number, since it is larger than the sum of its proper divisors (259164916).

320401204 is a wasteful number, since it uses less digits than its factorization.

320401204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13987 (or 13985 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 320401204 is about 17899.7542999897. The cubic root of 320401204 is about 684.2761131186.

Adding to 320401204 its reverse (402104023), we get a palindrome (722505227).

The spelling of 320401204 in words is "three hundred twenty million, four hundred one thousand, two hundred four".