13004321 has 4 divisors (see below), whose sum is σ = 14186544. Its totient is φ = 11822100.

The previous prime is 13004317. The next prime is 13004323. The reversal of 13004321 is 12340031.

13004321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13004321 - 2² = 13004317 is a prime.

It is a super-2 number, since 2×13004321² = 338224729342082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13004296 and 13004305.

It is not an unprimeable number, because it can be changed into a prime (13004323) 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, 591095 + ... + 591116.

It is an arithmetic number, because the mean of its divisors is an integer number (3546636).

Almost surely, 2^13004321 is an apocalyptic number.

13004321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13004321 is a deficient number, since it is larger than the sum of its proper divisors (1182223).

13004321 is a wasteful number, since it uses less digits than its factorization.

13004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182222.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13004321 is about 3606.1504405668. The cubic root of 13004321 is about 235.1595174688.

Adding to 13004321 its reverse (12340031), we get a palindrome (25344352).

The spelling of 13004321 in words is "thirteen million, four thousand, three hundred twenty-one".