11003103 has 6 divisors (see below), whose sum is σ = 15893384. Its totient is φ = 7335396.

The previous prime is 11003099. The next prime is 11003107. The reversal of 11003103 is 30130011.

It is an interprime number because it is at equal distance from previous prime (11003099) and next prime (11003107).

It is not a de Polignac number, because 11003103 - 2² = 11003099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1222567 = 11003103 / (1 + 1 + 0 + 0 + 3 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611275 + ... + 611292.

Almost surely, 2^11003103 is an apocalyptic number.

11003103 is a deficient number, since it is larger than the sum of its proper divisors (4890281).

11003103 is a wasteful number, since it uses less digits than its factorization.

11003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222573 (or 1222570 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 11003103 is about 3317.0925522210. The cubic root of 11003103 is about 222.4189192430.

Adding to 11003103 its reverse (30130011), we get a palindrome (41133114).

The spelling of 11003103 in words is "eleven million, three thousand, one hundred three".