11131051133 has 4 divisors (see below), whose sum is σ = 11144576928. Its totient is φ = 11117525340.

The previous prime is 11131051117. The next prime is 11131051147. The reversal of 11131051133 is 33115013111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11131051133 - 2⁴ = 11131051117 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 (11131051153) 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, 6761663 + ... + 6763308.

It is an arithmetic number, because the mean of its divisors is an integer number (2786144232).

Almost surely, 2^11131051133 is an apocalyptic number.

It is an amenable number.

11131051133 is a deficient number, since it is larger than the sum of its proper divisors (13525795).

11131051133 is an equidigital number, since it uses as much as digits as its factorization.

11131051133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13525794.

The product of its (nonzero) digits is 135, while the sum is 20.

Adding to 11131051133 its reverse (33115013111), we get a palindrome (44246064244).

The spelling of 11131051133 in words is "eleven billion, one hundred thirty-one million, fifty-one thousand, one hundred thirty-three".