13323131331 has 4 divisors (see below), whose sum is σ = 17764175112. Its totient is φ = 8882087552.

The previous prime is 13323131323. The next prime is 13323131357. The reversal of 13323131331 is 13313132331.

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 13323131331 - 2³ = 13323131323 is a prime.

It is a super-2 number, since 2×13323131331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13323132331) 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, 2220521886 + ... + 2220521891.

It is an arithmetic number, because the mean of its divisors is an integer number (4441043778).

Almost surely, 2^13323131331 is an apocalyptic number.

13323131331 is a deficient number, since it is larger than the sum of its proper divisors (4441043781).

13323131331 is an equidigital number, since it uses as much as digits as its factorization.

13323131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441043780.

The product of its digits is 1458, while the sum is 24.

Adding to 13323131331 its reverse (13313132331), we get a palindrome (26636263662).

The spelling of 13323131331 in words is "thirteen billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred thirty-one".