11131203103 has 2 divisors, whose sum is σ = 11131203104. Its totient is φ = 11131203102.

The previous prime is 11131203049. The next prime is 11131203113. The reversal of 11131203103 is 30130213111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131203103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131203113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565601551 + 5565601552.

It is an arithmetic number, because the mean of its divisors is an integer number (5565601552).

Almost surely, 2^11131203103 is an apocalyptic number.

11131203103 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131203103 is an equidigital number, since it uses as much as digits as its factorization.

11131203103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11131203103 its reverse (30130213111), we get a palindrome (41261416214).

The spelling of 11131203103 in words is "eleven billion, one hundred thirty-one million, two hundred three thousand, one hundred three".