13322320131 has 4 divisors (see below), whose sum is σ = 17763093512. Its totient is φ = 8881546752.

The previous prime is 13322320127. The next prime is 13322320213. The reversal of 13322320131 is 13102322331.

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

It is not a de Polignac number, because 13322320131 - 2² = 13322320127 is a prime.

It is a super-2 number, since 2×13322320131² (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 = 13322320098 and 13322320107.

It is not an unprimeable number, because it can be changed into a prime (13322320331) 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, 2220386686 + ... + 2220386691.

It is an arithmetic number, because the mean of its divisors is an integer number (4440773378).

Almost surely, 2^13322320131 is an apocalyptic number.

13322320131 is a deficient number, since it is larger than the sum of its proper divisors (4440773381).

13322320131 is an equidigital number, since it uses as much as digits as its factorization.

13322320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440773380.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13322320131 its reverse (13102322331), we get a palindrome (26424642462).

The spelling of 13322320131 in words is "thirteen billion, three hundred twenty-two million, three hundred twenty thousand, one hundred thirty-one".