11123441131 has 4 divisors (see below), whose sum is σ = 12134663064. Its totient is φ = 10112219200.

The previous prime is 11123441117. The next prime is 11123441183. The reversal of 11123441131 is 13114432111.

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 11123441131 - 2²⁷ = 10989223403 is a prime.

It is a super-2 number, since 2×11123441131² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123441101) 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, 505610950 + ... + 505610971.

It is an arithmetic number, because the mean of its divisors is an integer number (3033665766).

Almost surely, 2^11123441131 is an apocalyptic number.

11123441131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11123441131 is a deficient number, since it is larger than the sum of its proper divisors (1011221933).

11123441131 is a wasteful number, since it uses less digits than its factorization.

11123441131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011221932.

The product of its digits is 288, while the sum is 22.

Adding to 11123441131 its reverse (13114432111), we get a palindrome (24237873242).

It can be divided in two parts, 11123 and 441131, that added together give a palindrome (452254).

The spelling of 11123441131 in words is "eleven billion, one hundred twenty-three million, four hundred forty-one thousand, one hundred thirty-one".