11011131233 has 4 divisors (see below), whose sum is σ = 11011967508. Its totient is φ = 11010294960.

The previous prime is 11011131193. The next prime is 11011131269. The reversal of 11011131233 is 33213111011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33213111011 = 2693 ⋅12333127.

It can be written as a sum of positive squares in 2 ways, for example, as 2345755489 + 8665375744 = 48433^2 + 93088^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011131233 - 2²⁴ = 10994354017 is a prime.

It is a super-5 number, since 5×11011131233⁵ (a number of 51 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011131293) 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, 398066 + ... + 424827.

It is an arithmetic number, because the mean of its divisors is an integer number (2752991877).

Almost surely, 2^11011131233 is an apocalyptic number.

It is an amenable number.

11011131233 is a deficient number, since it is larger than the sum of its proper divisors (836275).

11011131233 is an equidigital number, since it uses as much as digits as its factorization.

11011131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836274.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11011131233 its reverse (33213111011), we get a palindrome (44224242244).

The spelling of 11011131233 in words is "eleven billion, eleven million, one hundred thirty-one thousand, two hundred thirty-three".