11131130203 has 16 divisors (see below), whose sum is σ = 11288699136. Its totient is φ = 10975121920.

The previous prime is 11131130177. The next prime is 11131130237. The reversal of 11131130203 is 30203113111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131130203 is a prime.

It is a super-2 number, since 2×11131130203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111130203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12897750 + ... + 12898612.

It is an arithmetic number, because the mean of its divisors is an integer number (705543696).

Almost surely, 2^11131130203 is an apocalyptic number.

11131130203 is a deficient number, since it is larger than the sum of its proper divisors (157568933).

11131130203 is a wasteful number, since it uses less digits than its factorization.

11131130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574.

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

Adding to 11131130203 its reverse (30203113111), we get a palindrome (41334243314).

The spelling of 11131130203 in words is "eleven billion, one hundred thirty-one million, one hundred thirty thousand, two hundred three".