13115243 has 2 divisors, whose sum is σ = 13115244. Its totient is φ = 13115242.

The previous prime is 13115239. The next prime is 13115251. The reversal of 13115243 is 34251131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13115243 - 2² = 13115239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13115233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6557621 + 6557622.

It is an arithmetic number, because the mean of its divisors is an integer number (6557622).

Almost surely, 2^13115243 is an apocalyptic number.

13115243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13115243 is an equidigital number, since it uses as much as digits as its factorization.

13115243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 13115243 is about 3621.4973422605. The cubic root of 13115243 is about 235.8262330462.

Adding to 13115243 its reverse (34251131), we get a palindrome (47366374).

The spelling of 13115243 in words is "thirteen million, one hundred fifteen thousand, two hundred forty-three".