13045321 has 2 divisors, whose sum is σ = 13045322. Its totient is φ = 13045320.

The previous prime is 13045309. The next prime is 13045387. The reversal of 13045321 is 12354031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7639696 + 5405625 = 2764^2 + 2325^2 .

It is an emirp because it is prime and its reverse (12354031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13045321 - 2¹⁵ = 13012553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13045391) 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, 6522660 + 6522661.

It is an arithmetic number, because the mean of its divisors is an integer number (6522661).

Almost surely, 2^13045321 is an apocalyptic number.

It is an amenable number.

13045321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13045321 is an equidigital number, since it uses as much as digits as its factorization.

13045321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13045321 is about 3611.8306992438. The cubic root of 13045321 is about 235.4063950340.

Adding to 13045321 its reverse (12354031), we get a palindrome (25399352).

It can be divided in two parts, 13045 and 321, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 13045321 in words is "thirteen million, forty-five thousand, three hundred twenty-one".