13321223131 has 8 divisors (see below), whose sum is σ = 13512144384. Its totient is φ = 13130393640.

The previous prime is 13321223117. The next prime is 13321223143. The reversal of 13321223131 is 13132212331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13321223131 - 2²¹ = 13319125979 is a prime.

It is a super-2 number, since 2×13321223131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321223161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302206 + ... + 343468.

It is an arithmetic number, because the mean of its divisors is an integer number (1689018048).

Almost surely, 2^13321223131 is an apocalyptic number.

13321223131 is a deficient number, since it is larger than the sum of its proper divisors (190921253).

13321223131 is an equidigital number, since it uses as much as digits as its factorization.

13321223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45881.

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

Adding to 13321223131 its reverse (13132212331), we get a palindrome (26453435462).

The spelling of 13321223131 in words is "thirteen billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred thirty-one".