11011131023 has 4 divisors (see below), whose sum is σ = 11014880520. Its totient is φ = 11007381528.

The previous prime is 11011130983. The next prime is 11011131041. The reversal of 11011131023 is 32013111011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11011131023 - 2³⁰ = 9937389199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011130989 and 11011131007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011131073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870340 + ... + 1876217.

It is an arithmetic number, because the mean of its divisors is an integer number (2753720130).

Almost surely, 2^11011131023 is an apocalyptic number.

11011131023 is a deficient number, since it is larger than the sum of its proper divisors (3749497).

11011131023 is an equidigital number, since it uses as much as digits as its factorization.

11011131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749496.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11011131023 its reverse (32013111011), we get a palindrome (43024242034).

The spelling of 11011131023 in words is "eleven billion, eleven million, one hundred thirty-one thousand, twenty-three".