13103543 has 2 divisors, whose sum is σ = 13103544. Its totient is φ = 13103542.

The previous prime is 13103533. The next prime is 13103551. The reversal of 13103543 is 34530131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13103543 - 2⁸ = 13103287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13103533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551771 + 6551772.

It is an arithmetic number, because the mean of its divisors is an integer number (6551772).

Almost surely, 2^13103543 is an apocalyptic number.

13103543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13103543 is an equidigital number, since it uses as much as digits as its factorization.

13103543 is an evil number, because the sum of its binary digits is even.

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

The square root of 13103543 is about 3619.8816278989. The cubic root of 13103543 is about 235.7560859710.

Adding to 13103543 its reverse (34530131), we get a palindrome (47633674).

The spelling of 13103543 in words is "thirteen million, one hundred three thousand, five hundred forty-three".