13321279 has 2 divisors, whose sum is σ = 13321280. Its totient is φ = 13321278.

The previous prime is 13321229. The next prime is 13321283. The reversal of 13321279 is 97212331.

It is a strong prime.

It is an emirp because it is prime and its reverse (97212331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13321279 - 2⁷ = 13321151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321219) 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 as a sum of consecutive naturals, namely, 6660639 + 6660640.

It is an arithmetic number, because the mean of its divisors is an integer number (6660640).

Almost surely, 2^13321279 is an apocalyptic number.

13321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321279 is an equidigital number, since it uses as much as digits as its factorization.

13321279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 13321279 is about 3649.8327358935. The cubic root of 13321279 is about 237.0547387909.

It can be divided in two parts, 133 and 21279, that added together give a palindrome (21412).

The spelling of 13321279 in words is "thirteen million, three hundred twenty-one thousand, two hundred seventy-nine".