13244321 has 2 divisors, whose sum is σ = 13244322. Its totient is φ = 13244320.

The previous prime is 13244293. The next prime is 13244323. The reversal of 13244321 is 12344231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 4363921 = 2980^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 13244321 - 2¹⁰ = 13243297 is a prime.

It is a Sophie Germain prime.

Together with 13244323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13244293 and 13244302.

It is not a weakly prime, because it can be changed into another prime (13244323) 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 as a sum of consecutive naturals, namely, 6622160 + 6622161.

It is an arithmetic number, because the mean of its divisors is an integer number (6622161).

Almost surely, 2^13244321 is an apocalyptic number.

It is an amenable number.

13244321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244321 is an equidigital number, since it uses as much as digits as its factorization.

13244321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 13244321 is about 3639.2747903944. The cubic root of 13244321 is about 236.5973627223.

Adding to 13244321 its reverse (12344231), we get a palindrome (25588552).

The spelling of 13244321 in words is "thirteen million, two hundred forty-four thousand, three hundred twenty-one".