13324321 has 4 divisors (see below), whose sum is σ = 13345200. Its totient is φ = 13303444.

The previous prime is 13324319. The next prime is 13324361. The reversal of 13324321 is 12342331.

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 13324321 - 2¹ = 13324319 is a prime.

It is a super-2 number, since 2×13324321² = 355075060222082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13324361) 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, 9451 + ... + 10768.

It is an arithmetic number, because the mean of its divisors is an integer number (3336300).

Almost surely, 2^13324321 is an apocalyptic number.

It is an amenable number.

13324321 is a deficient number, since it is larger than the sum of its proper divisors (20879).

13324321 is an equidigital number, since it uses as much as digits as its factorization.

13324321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20878.

The product of its digits is 432, while the sum is 19.

The square root of 13324321 is about 3650.2494435312. The cubic root of 13324321 is about 237.0727817439.

Adding to 13324321 its reverse (12342331), we get a palindrome (25666652).

The spelling of 13324321 in words is "thirteen million, three hundred twenty-four thousand, three hundred twenty-one".