11311103 has 4 divisors (see below), whose sum is σ = 11976480. Its totient is φ = 10645728.

The previous prime is 11311087. The next prime is 11311109. The reversal of 11311103 is 30111311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30111311 = 1151 ⋅26161.

It is a cyclic number.

It is not a de Polignac number, because 11311103 - 2⁴ = 11311087 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 (11311109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332663 + ... + 332696.

It is an arithmetic number, because the mean of its divisors is an integer number (2994120).

Almost surely, 2^11311103 is an apocalyptic number.

11311103 is a deficient number, since it is larger than the sum of its proper divisors (665377).

11311103 is an equidigital number, since it uses as much as digits as its factorization.

11311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665376.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11311103 is about 3363.1983289720. The cubic root of 11311103 is about 224.4751751228.

Adding to 11311103 its reverse (30111311), we get a palindrome (41422414).

The spelling of 11311103 in words is "eleven million, three hundred eleven thousand, one hundred three".