13013543 has 2 divisors, whose sum is σ = 13013544. Its totient is φ = 13013542.

The previous prime is 13013527. The next prime is 13013549. The reversal of 13013543 is 34531031.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34531031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13013543 - 2⁴ = 13013527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13013549) 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, 6506771 + 6506772.

It is an arithmetic number, because the mean of its divisors is an integer number (6506772).

Almost surely, 2^13013543 is an apocalyptic number.

13013543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13013543 is an equidigital number, since it uses as much as digits as its factorization.

13013543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 13013543 is about 3607.4288627775. The cubic root of 13013543 is about 235.2150920387.

Adding to 13013543 its reverse (34531031), we get a palindrome (47544574).

The spelling of 13013543 in words is "thirteen million, thirteen thousand, five hundred forty-three".