13321321 has 8 divisors (see below), whose sum is σ = 14382144. Its totient is φ = 12265680.

The previous prime is 13321313. The next prime is 13321327. The reversal of 13321321 is 12312331.

13321321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13321321 - 2³ = 13321313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13321295 and 13321304.

It is not an unprimeable number, because it can be changed into a prime (13321327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5340 + ... + 7426.

It is an arithmetic number, because the mean of its divisors is an integer number (1797768).

Almost surely, 2^13321321 is an apocalyptic number.

It is an amenable number.

13321321 is a deficient number, since it is larger than the sum of its proper divisors (1060823).

13321321 is a wasteful number, since it uses less digits than its factorization.

13321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its digits is 108, while the sum is 16.

The square root of 13321321 is about 3649.8384895773. The cubic root of 13321321 is about 237.0549879234.

Adding to 13321321 its reverse (12312331), we get a palindrome (25633652).

The spelling of 13321321 in words is "thirteen million, three hundred twenty-one thousand, three hundred twenty-one".