13240343 has 2 divisors, whose sum is σ = 13240344. Its totient is φ = 13240342.

The previous prime is 13240333. The next prime is 13240349. The reversal of 13240343 is 34304231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13240343 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13240349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620171 + 6620172.

It is an arithmetic number, because the mean of its divisors is an integer number (6620172).

Almost surely, 2^13240343 is an apocalyptic number.

13240343 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240343 is an equidigital number, since it uses as much as digits as its factorization.

13240343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13240343 is about 3638.7282118894. The cubic root of 13240343 is about 236.5736726050.

Adding to 13240343 its reverse (34304231), we get a palindrome (47544574).

The spelling of 13240343 in words is "thirteen million, two hundred forty thousand, three hundred forty-three".