13103903 has 4 divisors (see below), whose sum is σ = 13141800. Its totient is φ = 13066008.

The previous prime is 13103891. The next prime is 13103921. The reversal of 13103903 is 30930131.

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 13103903 - 2¹⁴ = 13087519 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103933) 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, 18425 + ... + 19122.

It is an arithmetic number, because the mean of its divisors is an integer number (3285450).

Almost surely, 2^13103903 is an apocalyptic number.

13103903 is a deficient number, since it is larger than the sum of its proper divisors (37897).

13103903 is an equidigital number, since it uses as much as digits as its factorization.

13103903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37896.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 13103903 is about 3619.9313529403. The cubic root of 13103903 is about 235.7582449650.

The spelling of 13103903 in words is "thirteen million, one hundred three thousand, nine hundred three".