320430344 has 16 divisors (see below), whose sum is σ = 647023020. Its totient is φ = 147890880.

The previous prime is 320430337. The next prime is 320430359. The reversal of 320430344 is 443034023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 303108100 + 17322244 = 17410^2 + 4162^2 .

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, 1540427 + ... + 1540634.

Almost surely, 2^320430344 is an apocalyptic number.

It is an amenable number.

320430344 is an abundant number, since it is smaller than the sum of its proper divisors (326592676).

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

320430344 is a wasteful number, since it uses less digits than its factorization.

320430344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081080 (or 3081076 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 320430344 is about 17900.5682591364. The cubic root of 320430344 is about 684.2968571121.

Adding to 320430344 its reverse (443034023), we get a palindrome (763464367).

The spelling of 320430344 in words is "three hundred twenty million, four hundred thirty thousand, three hundred forty-four".