13204321 has 8 divisors (see below), whose sum is σ = 14523264. Its totient is φ = 11928720.

The previous prime is 13204283. The next prime is 13204327. The reversal of 13204321 is 12340231.

It is a happy number.

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 13204321 - 2¹³ = 13196129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13204295 and 13204304.

It is not an unprimeable number, because it can be changed into a prime (13204327) 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 7 ways as a sum of consecutive naturals, for example, 10195 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (1815408).

Almost surely, 2^13204321 is an apocalyptic number.

It is an amenable number.

13204321 is a deficient number, since it is larger than the sum of its proper divisors (1318943).

13204321 is a wasteful number, since it uses less digits than its factorization.

13204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21671.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13204321 is about 3633.7750343135. The cubic root of 13204321 is about 236.3589350464.

Adding to 13204321 its reverse (12340231), we get a palindrome (25544552).

The spelling of 13204321 in words is "thirteen million, two hundred four thousand, three hundred twenty-one".