320344430 has 64 divisors (see below), whose sum is σ = 701281152. Its totient is φ = 102850560.

The previous prime is 320344417. The next prime is 320344441. The reversal of 320344430 is 34443023.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320344396 and 320344405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286232 + ... + 287348.

It is an arithmetic number, because the mean of its divisors is an integer number (10957518).

Almost surely, 2^320344430 is an apocalyptic number.

320344430 is an abundant number, since it is smaller than the sum of its proper divisors (380936722).

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

320344430 is a wasteful number, since it uses less digits than its factorization.

320344430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

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

The square root of 320344430 is about 17898.1683420399. The cubic root of 320344430 is about 684.2356936004.

Adding to 320344430 its reverse (34443023), we get a palindrome (354787453).

The spelling of 320344430 in words is "three hundred twenty million, three hundred forty-four thousand, four hundred thirty".