13232311321 has 4 divisors (see below), whose sum is σ = 13299480612. Its totient is φ = 13165142032.

The previous prime is 13232311297. The next prime is 13232311387. The reversal of 13232311321 is 12311323231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12218207296 + 1014104025 = 110536^2 + 31845^2 .

It is a cyclic number.

It is not a de Polignac number, because 13232311321 - 2⁵ = 13232311289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13232311292 and 13232311301.

It is not an unprimeable number, because it can be changed into a prime (13232321321) 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, 33584350 + ... + 33584743.

It is an arithmetic number, because the mean of its divisors is an integer number (3324870153).

Almost surely, 2^13232311321 is an apocalyptic number.

It is an amenable number.

13232311321 is a deficient number, since it is larger than the sum of its proper divisors (67169291).

13232311321 is an equidigital number, since it uses as much as digits as its factorization.

13232311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67169290.

The product of its digits is 648, while the sum is 22.

Adding to 13232311321 its reverse (12311323231), we get a palindrome (25543634552).

The spelling of 13232311321 in words is "thirteen billion, two hundred thirty-two million, three hundred eleven thousand, three hundred twenty-one".