13311331223 has 4 divisors (see below), whose sum is σ = 13338665040. Its totient is φ = 13283997408.

The previous prime is 13311331199. The next prime is 13311331237. The reversal of 13311331223 is 32213311331.

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 13311331223 - 2¹⁰ = 13311330199 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 (13314331223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13666178 + ... + 13667151.

It is an arithmetic number, because the mean of its divisors is an integer number (3334666260).

Almost surely, 2^13311331223 is an apocalyptic number.

13311331223 is a deficient number, since it is larger than the sum of its proper divisors (27333817).

13311331223 is an equidigital number, since it uses as much as digits as its factorization.

13311331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27333816.

The product of its digits is 972, while the sum is 23.

Adding to 13311331223 its reverse (32213311331), we get a palindrome (45524642554).

The spelling of 13311331223 in words is "thirteen billion, three hundred eleven million, three hundred thirty-one thousand, two hundred twenty-three".