13104321 has 4 divisors (see below), whose sum is σ = 17472432. Its totient is φ = 8736212.

The previous prime is 13104277. The next prime is 13104347. The reversal of 13104321 is 12340131.

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 13104321 - 2⁷ = 13104193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13104321.

It is not an unprimeable number, because it can be changed into a prime (13104361) 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, 2184051 + ... + 2184056.

It is an arithmetic number, because the mean of its divisors is an integer number (4368108).

Almost surely, 2^13104321 is an apocalyptic number.

It is an amenable number.

13104321 is a deficient number, since it is larger than the sum of its proper divisors (4368111).

13104321 is an equidigital number, since it uses as much as digits as its factorization.

13104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368110.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13104321 is about 3619.9890883813. The cubic root of 13104321 is about 235.7607517474.

Adding to 13104321 its reverse (12340131), we get a palindrome (25444452).

The spelling of 13104321 in words is "thirteen million, one hundred four thousand, three hundred twenty-one".