320320424 has 16 divisors (see below), whose sum is σ = 603652500. Its totient is φ = 159346432.

The previous prime is 320320387. The next prime is 320320513. The reversal of 320320424 is 424023023.

It can be written as a sum of positive squares in 2 ways, for example, as 320052100 + 268324 = 17890^2 + 518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320320396 and 320320405.

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, 100049 + ... + 103200.

Almost surely, 2^320320424 is an apocalyptic number.

It is an amenable number.

320320424 is a deficient number, since it is larger than the sum of its proper divisors (283332076).

320320424 is a wasteful number, since it uses less digits than its factorization.

320320424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203452 (or 203448 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 320320424 is about 17897.4977021929. The cubic root of 320320424 is about 684.2186014012.

Adding to 320320424 its reverse (424023023), we get a palindrome (744343447).

The spelling of 320320424 in words is "three hundred twenty million, three hundred twenty thousand, four hundred twenty-four".