13231223311 has 4 divisors (see below), whose sum is σ = 13362225624. Its totient is φ = 13100221000.

The previous prime is 13231223309. The next prime is 13231223413. The reversal of 13231223311 is 11332213231.

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 13231223311 - 2¹ = 13231223309 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 (13231223011) 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, 65501005 + ... + 65501206.

It is an arithmetic number, because the mean of its divisors is an integer number (3340556406).

Almost surely, 2^13231223311 is an apocalyptic number.

13231223311 is a deficient number, since it is larger than the sum of its proper divisors (131002313).

13231223311 is a wasteful number, since it uses less digits than its factorization.

13231223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131002312.

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

Adding to 13231223311 its reverse (11332213231), we get a palindrome (24563436542).

The spelling of 13231223311 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-three thousand, three hundred eleven".