11131130233 has 4 divisors (see below), whose sum is σ = 11514962340. Its totient is φ = 10747298128.

The previous prime is 11131130177. The next prime is 11131130237. The reversal of 11131130233 is 33203113111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7347404089 + 3783726144 = 85717^2 + 61512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131130233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11131130233.

It is not an unprimeable number, because it can be changed into a prime (11131130237) 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, 191916010 + ... + 191916067.

It is an arithmetic number, because the mean of its divisors is an integer number (2878740585).

Almost surely, 2^11131130233 is an apocalyptic number.

It is an amenable number.

11131130233 is a deficient number, since it is larger than the sum of its proper divisors (383832107).

11131130233 is an equidigital number, since it uses as much as digits as its factorization.

11131130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383832106.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11131130233 its reverse (33203113111), we get a palindrome (44334243344).

The spelling of 11131130233 in words is "eleven billion, one hundred thirty-one million, one hundred thirty thousand, two hundred thirty-three".