13306321 has 4 divisors (see below), whose sum is σ = 15207232. Its totient is φ = 11405412.

The previous prime is 13306313. The next prime is 13306361. The reversal of 13306321 is 12360331.

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 13306321 - 2³ = 13306313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13306361) 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 3 ways as a sum of consecutive naturals, for example, 950445 + ... + 950458.

It is an arithmetic number, because the mean of its divisors is an integer number (3801808).

Almost surely, 2^13306321 is an apocalyptic number.

It is an amenable number.

13306321 is a deficient number, since it is larger than the sum of its proper divisors (1900911).

13306321 is an equidigital number, since it uses as much as digits as its factorization.

13306321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900910.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 13306321 is about 3647.7830253457. The cubic root of 13306321 is about 236.9659787255.

Adding to 13306321 its reverse (12360331), we get a palindrome (25666652).

The spelling of 13306321 in words is "thirteen million, three hundred six thousand, three hundred twenty-one".