320113305 has 24 divisors (see below), whose sum is σ = 556058880. Its totient is φ = 170359200.

The previous prime is 320113243. The next prime is 320113309. The reversal of 320113305 is 503311023.

320113305 is a `hidden beast` number, since 320 + 11 + 330 + 5 = 666.

It is not a de Polignac number, because 320113305 - 2¹⁰ = 320112281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320113309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14130 + ... + 28980.

It is an arithmetic number, because the mean of its divisors is an integer number (23169120).

Almost surely, 2^320113305 is an apocalyptic number.

It is an amenable number.

320113305 is a deficient number, since it is larger than the sum of its proper divisors (235945575).

320113305 is a wasteful number, since it uses less digits than its factorization.

320113305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15341 (or 15338 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 320113305 is about 17891.7105107365. The cubic root of 320113305 is about 684.0710978214.

Adding to 320113305 its reverse (503311023), we get a palindrome (823424328).

The spelling of 320113305 in words is "three hundred twenty million, one hundred thirteen thousand, three hundred five".