11103 has 4 divisors (see below), whose sum is σ = 14808. Its totient is φ = 7400.

The previous prime is 11093. The next prime is 11113. The reversal of 11103 is 30111.

Adding to 11103 its reverse (30111), we get a palindrome (41214).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30111 = 3 ⋅10037.

It is an interprime number because it is at equal distance from previous prime (11093) and next prime (11113).

It is a cyclic number.

It is not a de Polignac number, because 11103 - 2^{4} = 11087 is a prime.

It is a D-number.

It is a junction number, because it is equal to *n*+sod(*n*) for *n* = 11091 and 11100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113) 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, 1848 + ... + 1853.

It is an arithmetic number, because the mean of its divisors is an integer number (3702).

2^{11103} is an apocalyptic number.

11103 is a deficient number, since it is larger than the sum of its proper divisors (3705).

11103 is an equidigital number, since it uses as much as digits as its factorization.

11103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704.

The product of its (nonzero) digits is 3, while the sum is 6.

The square root of 11103 is about 105.3707739366. The cubic root of 11103 is about 22.3090005026.

The spelling of 11103 in words is "eleven thousand, one hundred three", and thus it is an iban number.

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