320530115 has 4 divisors (see below), whose sum is σ = 384636144. Its totient is φ = 256424088.

The previous prime is 320530099. The next prime is 320530117. The reversal of 320530115 is 511035023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320530115 - 2⁴ = 320530099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320530117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32053007 + ... + 32053016.

It is an arithmetic number, because the mean of its divisors is an integer number (96159036).

Almost surely, 2^320530115 is an apocalyptic number.

320530115 is a deficient number, since it is larger than the sum of its proper divisors (64106029).

320530115 is an equidigital number, since it uses as much as digits as its factorization.

320530115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64106028.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 320530115 is about 17903.3548532112. The cubic root of 320530115 is about 684.3678719190.

Adding to 320530115 its reverse (511035023), we get a palindrome (831565138).

The spelling of 320530115 in words is "three hundred twenty million, five hundred thirty thousand, one hundred fifteen".