13244431 has 2 divisors, whose sum is σ = 13244432. Its totient is φ = 13244430.

The previous prime is 13244383. The next prime is 13244443. The reversal of 13244431 is 13444231.

It is a strong prime.

It is an emirp because it is prime and its reverse (13444231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13244431 - 2¹³ = 13236239 is a prime.

It is a super-2 number, since 2×13244431² = 350829905027522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13244831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622215 + 6622216.

It is an arithmetic number, because the mean of its divisors is an integer number (6622216).

Almost surely, 2^13244431 is an apocalyptic number.

13244431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244431 is an equidigital number, since it uses as much as digits as its factorization.

13244431 is an evil number, because the sum of its binary digits is even.

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

The square root of 13244431 is about 3639.2899032641. The cubic root of 13244431 is about 236.5980177361.

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

The spelling of 13244431 in words is "thirteen million, two hundred forty-four thousand, four hundred thirty-one".