13213132321 has 4 divisors (see below), whose sum is σ = 13520414512. Its totient is φ = 12905850132.

The previous prime is 13213132313. The next prime is 13213132363. The reversal of 13213132321 is 12323131231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13213132321 - 2³ = 13213132313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213132292 and 13213132301.

It is not an unprimeable number, because it can be changed into a prime (13213132421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153641031 + ... + 153641116.

It is an arithmetic number, because the mean of its divisors is an integer number (3380103628).

Almost surely, 2^13213132321 is an apocalyptic number.

It is an amenable number.

13213132321 is a deficient number, since it is larger than the sum of its proper divisors (307282191).

13213132321 is an equidigital number, since it uses as much as digits as its factorization.

13213132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307282190.

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

Adding to 13213132321 its reverse (12323131231), we get a palindrome (25536263552).

The spelling of 13213132321 in words is "thirteen billion, two hundred thirteen million, one hundred thirty-two thousand, three hundred twenty-one".