13243313431 has 2 divisors, whose sum is σ = 13243313432. Its totient is φ = 13243313430.

The previous prime is 13243313417. The next prime is 13243313437. The reversal of 13243313431 is 13431334231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13243313431 - 2²³ = 13234924823 is a prime.

It is a super-2 number, since 2×13243313431² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13243313431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13243313437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621656715 + 6621656716.

It is an arithmetic number, because the mean of its divisors is an integer number (6621656716).

Almost surely, 2^13243313431 is an apocalyptic number.

13243313431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243313431 is an equidigital number, since it uses as much as digits as its factorization.

13243313431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

Adding to 13243313431 its reverse (13431334231), we get a palindrome (26674647662).

The spelling of 13243313431 in words is "thirteen billion, two hundred forty-three million, three hundred thirteen thousand, four hundred thirty-one".