320332013 has 4 divisors (see below), whose sum is σ = 320375328. Its totient is φ = 320288700.

The previous prime is 320331961. The next prime is 320332043. The reversal of 320332013 is 310233023.

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.

It is a cyclic number.

It is not a de Polignac number, because 320332013 - 2¹⁴ = 320315629 is a prime.

It is a super-2 number, since 2×320332013² = 205225197105264338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320331982 and 320332000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320332043) 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, 7463 + ... + 26388.

It is an arithmetic number, because the mean of its divisors is an integer number (80093832).

Almost surely, 2^320332013 is an apocalyptic number.

It is an amenable number.

320332013 is a deficient number, since it is larger than the sum of its proper divisors (43315).

320332013 is an equidigital number, since it uses as much as digits as its factorization.

320332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43314.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 320332013 is about 17897.8214596079. The cubic root of 320332013 is about 684.2268528407.

Adding to 320332013 its reverse (310233023), we get a palindrome (630565036).

The spelling of 320332013 in words is "three hundred twenty million, three hundred thirty-two thousand, thirteen".