320441313 has 16 divisors (see below), whose sum is σ = 472058496. Its totient is φ = 192318720.

The previous prime is 320441309. The next prime is 320441321. The reversal of 320441313 is 313144023.

It is not a de Polignac number, because 320441313 - 2² = 320441309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320441313.

It is not an unprimeable number, because it can be changed into a prime (320441323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135418 + ... + 137763.

It is an arithmetic number, because the mean of its divisors is an integer number (29503656).

Almost surely, 2^320441313 is an apocalyptic number.

It is an amenable number.

320441313 is a deficient number, since it is larger than the sum of its proper divisors (151617183).

320441313 is a wasteful number, since it uses less digits than its factorization.

320441313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273224.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320441313 is about 17900.8746434357. The cubic root of 320441313 is about 684.3046653266.

Adding to 320441313 its reverse (313144023), we get a palindrome (633585336).

The spelling of 320441313 in words is "three hundred twenty million, four hundred forty-one thousand, three hundred thirteen".