13227281 has 2 divisors, whose sum is σ = 13227282. Its totient is φ = 13227280.

The previous prime is 13227251. The next prime is 13227289. The reversal of 13227281 is 18272231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 410881 = 3580^2 + 641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13227281 is a prime.

It is a super-2 number, since 2×13227281² = 349921925305922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13227281.

It is not a weakly prime, because it can be changed into another prime (13227289) 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, 6613640 + 6613641.

It is an arithmetic number, because the mean of its divisors is an integer number (6613641).

Almost surely, 2^13227281 is an apocalyptic number.

It is an amenable number.

13227281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13227281 is an equidigital number, since it uses as much as digits as its factorization.

13227281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 26.

The square root of 13227281 is about 3636.9329111217. The cubic root of 13227281 is about 236.4958513069.

The spelling of 13227281 in words is "thirteen million, two hundred twenty-seven thousand, two hundred eighty-one".