1131100044123 has 32 divisors (see below), whose sum is σ = 1731983745024. Its totient is φ = 643199422752.

The previous prime is 1131100044089. The next prime is 1131100044143. The reversal of 1131100044123 is 3214400011311.

It is not a de Polignac number, because 1131100044123 - 2⁶ = 1131100044059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1131100044123.

It is not an unprimeable number, because it can be changed into a prime (1131100044143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3442036 + ... + 3756302.

It is an arithmetic number, because the mean of its divisors is an integer number (54124492032).

Almost surely, 2^{1131100044123} is an apocalyptic number.

1131100044123 is a deficient number, since it is larger than the sum of its proper divisors (600883700901).

1131100044123 is a wasteful number, since it uses less digits than its factorization.

1131100044123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315111.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1131100044123 its reverse (3214400011311), we get a palindrome (4345500055434).

The spelling of 1131100044123 in words is "one trillion, one hundred thirty-one billion, one hundred million, forty-four thousand, one hundred twenty-three".