13213131321311 has 4 divisors (see below), whose sum is σ = 13213453688832. Its totient is φ = 13212808953792.

The previous prime is 13213131321287. The next prime is 13213131321323. The reversal of 13213131321311 is 11312313131231.

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 13213131321311 - 2²² = 13213127127007 is a prime.

It is a super-3 number, since 3×13213131321311³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213131381311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161122271 + ... + 161204256.

It is an arithmetic number, because the mean of its divisors is an integer number (3303363422208).

Almost surely, 2^{13213131321311} is an apocalyptic number.

13213131321311 is a deficient number, since it is larger than the sum of its proper divisors (322367521).

13213131321311 is an equidigital number, since it uses as much as digits as its factorization.

13213131321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322367520.

The product of its digits is 972, while the sum is 26.

Adding to 13213131321311 its reverse (11312313131231), we get a palindrome (24525444452542).

The spelling of 13213131321311 in words is "thirteen trillion, two hundred thirteen billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred eleven".