13543103 has 4 divisors (see below), whose sum is σ = 15477840. Its totient is φ = 11608368.

The previous prime is 13543099. The next prime is 13543111. The reversal of 13543103 is 30134531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13543103 - 2² = 13543099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967358 + ... + 967371.

It is an arithmetic number, because the mean of its divisors is an integer number (3869460).

Almost surely, 2^13543103 is an apocalyptic number.

13543103 is a deficient number, since it is larger than the sum of its proper divisors (1934737).

13543103 is an equidigital number, since it uses as much as digits as its factorization.

13543103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934736.

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

The square root of 13543103 is about 3680.0955150648. The cubic root of 13543103 is about 238.3633024512.

Adding to 13543103 its reverse (30134531), we get a palindrome (43677634).

The spelling of 13543103 in words is "thirteen million, five hundred forty-three thousand, one hundred three".