13444231 has 2 divisors, whose sum is σ = 13444232. Its totient is φ = 13444230.

The previous prime is 13444157. The next prime is 13444237. The reversal of 13444231 is 13244431.

It is a strong prime.

It is an emirp because it is prime and its reverse (13244431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13444231 - 2²¹ = 11347079 is a prime.

It is a super-2 number, since 2×13444231² = 361494694362722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13444237) 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, 6722115 + 6722116.

It is an arithmetic number, because the mean of its divisors is an integer number (6722116).

Almost surely, 2^13444231 is an apocalyptic number.

13444231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444231 is an equidigital number, since it uses as much as digits as its factorization.

13444231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 22.

The square root of 13444231 is about 3666.6375604905. The cubic root of 13444231 is about 237.7818246336.

Adding to 13444231 its reverse (13244431), we get a palindrome (26688662).

The spelling of 13444231 in words is "thirteen million, four hundred forty-four thousand, two hundred thirty-one".