320322013 has 4 divisors (see below), whose sum is σ = 349442208. Its totient is φ = 291201820.

The previous prime is 320322001. The next prime is 320322019. The reversal of 320322013 is 310223023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310223023 = 11 ⋅28202093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320322013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320322019) 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, 14560081 + ... + 14560102.

It is an arithmetic number, because the mean of its divisors is an integer number (87360552).

Almost surely, 2^320322013 is an apocalyptic number.

It is an amenable number.

320322013 is a deficient number, since it is larger than the sum of its proper divisors (29120195).

320322013 is a wasteful number, since it uses less digits than its factorization.

320322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29120194.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320322013 is about 17897.5420938184. The cubic root of 320322013 is about 684.2197327908.

Adding to 320322013 its reverse (310223023), we get a palindrome (630545036).

The spelling of 320322013 in words is "three hundred twenty million, three hundred twenty-two thousand, thirteen".