2103603 has 16 divisors (see below), whose sum is σ = 2999040. Its totient is φ = 1308384.

The previous prime is 2103601. The next prime is 2103611. The reversal of 2103603 is 3063012.

It is not a de Polignac number, because 2103603 - 2¹ = 2103601 is a prime.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2103601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2613 + ... + 3321.

It is an arithmetic number, because the mean of its divisors is an integer number (187440).

2^2103603 is an apocalyptic number.

2103603 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2103603 is a deficient number, since it is larger than the sum of its proper divisors (895437).

2103603 is a wasteful number, since it uses less digits than its factorization.

2103603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2103603 is about 1450.3802949572. The cubic root of 2103603 is about 128.1311115863.

Adding to 2103603 its reverse (3063012), we get a palindrome (5166615).

The spelling of 2103603 in words is "two million, one hundred three thousand, six hundred three".