13320322331 has 4 divisors (see below), whose sum is σ = 13320995472. Its totient is φ = 13319649192.

The previous prime is 13320322319. The next prime is 13320322339. The reversal of 13320322331 is 13322302331.

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 13320322331 - 2¹⁰ = 13320321307 is a prime.

It is a super-2 number, since 2×13320322331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13320322297 and 13320322306.

It is not an unprimeable number, because it can be changed into a prime (13320322339) 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, 305960 + ... + 346773.

It is an arithmetic number, because the mean of its divisors is an integer number (3330248868).

Almost surely, 2^13320322331 is an apocalyptic number.

13320322331 is a deficient number, since it is larger than the sum of its proper divisors (673141).

13320322331 is an equidigital number, since it uses as much as digits as its factorization.

13320322331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673140.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 13320322331 its reverse (13322302331), we get a palindrome (26642624662).

The spelling of 13320322331 in words is "thirteen billion, three hundred twenty million, three hundred twenty-two thousand, three hundred thirty-one".