11131310123 has 4 divisors (see below), whose sum is σ = 11216282088. Its totient is φ = 11046338160.

The previous prime is 11131310117. The next prime is 11131310191. The reversal of 11131310123 is 32101313111.

11131310123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11131310123 - 2⁶ = 11131310059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131310423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42485786 + ... + 42486047.

It is an arithmetic number, because the mean of its divisors is an integer number (2804070522).

Almost surely, 2^11131310123 is an apocalyptic number.

11131310123 is a deficient number, since it is larger than the sum of its proper divisors (84971965).

11131310123 is an equidigital number, since it uses as much as digits as its factorization.

11131310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84971964.

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

Adding to 11131310123 its reverse (32101313111), we get a palindrome (43232623234).

The spelling of 11131310123 in words is "eleven billion, one hundred thirty-one million, three hundred ten thousand, one hundred twenty-three".