1603103 has 4 divisors (see below), whose sum is σ = 1654848. Its totient is φ = 1551360.

The previous prime is 1603093. The next prime is 1603111. The reversal of 1603103 is 3013061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3013061 = 383 ⋅7867.

It is a cyclic number.

It is not a de Polignac number, because 1603103 - 2⁶ = 1603039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603183) 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, 25826 + ... + 25887.

It is an arithmetic number, because the mean of its divisors is an integer number (413712).

2^1603103 is an apocalyptic number.

1603103 is a deficient number, since it is larger than the sum of its proper divisors (51745).

1603103 is an equidigital number, since it uses as much as digits as its factorization.

1603103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51744.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1603103 is about 1266.1370383967. The cubic root of 1603103 is about 117.0362709276.

Adding to 1603103 its reverse (3013061), we get a palindrome (4616164).

The spelling of 1603103 in words is "one million, six hundred three thousand, one hundred three".