13321131311 has 4 divisors (see below), whose sum is σ = 13321861224. Its totient is φ = 13320401400.

The previous prime is 13321131223. The next prime is 13321131319. The reversal of 13321131311 is 11313112331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321131311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321131319) 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, 336860 + ... + 374321.

It is an arithmetic number, because the mean of its divisors is an integer number (3330465306).

Almost surely, 2^13321131311 is an apocalyptic number.

13321131311 is a deficient number, since it is larger than the sum of its proper divisors (729913).

13321131311 is an equidigital number, since it uses as much as digits as its factorization.

13321131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729912.

The product of its digits is 162, while the sum is 20.

Adding to 13321131311 its reverse (11313112331), we get a palindrome (24634243642).

The spelling of 13321131311 in words is "thirteen billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred eleven".