320320330013 has 4 divisors (see below), whose sum is σ = 320322203388. Its totient is φ = 320318456640.

The previous prime is 320320329821. The next prime is 320320330027. The reversal of 320320330013 is 310033023023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310033023023 = 113 ⋅2743655071.

It can be written as a sum of positive squares in 2 ways, for example, as 295645575289 + 24674754724 = 543733^2 + 157082^2 .

It is a cyclic number.

It is not a de Polignac number, because 320320330013 - 2¹⁰ = 320320328989 is a prime.

It is a super-2 number, since 2×320320330013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320320330313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651206 + ... + 1031847.

It is an arithmetic number, because the mean of its divisors is an integer number (80080550847).

Almost surely, 2^320320330013 is an apocalyptic number.

It is an amenable number.

320320330013 is a deficient number, since it is larger than the sum of its proper divisors (1873375).

320320330013 is a wasteful number, since it uses less digits than its factorization.

320320330013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873374.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 320320330013 its reverse (310033023023), we get a palindrome (630353353036).

The spelling of 320320330013 in words is "three hundred twenty billion, three hundred twenty million, three hundred thirty thousand, thirteen".