11131241123 has 4 divisors (see below), whose sum is σ = 11131981128. Its totient is φ = 11130501120.

The previous prime is 11131241119. The next prime is 11131241141. The reversal of 11131241123 is 32114213111.

11131241123 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 11131241123 - 2² = 11131241119 is a prime.

It is a super-2 number, since 2×11131241123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11131241095 and 11131241104.

It is not an unprimeable number, because it can be changed into a prime (11131241183) 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, 346961 + ... + 377682.

It is an arithmetic number, because the mean of its divisors is an integer number (2782995282).

Almost surely, 2^11131241123 is an apocalyptic number.

11131241123 is a deficient number, since it is larger than the sum of its proper divisors (740005).

11131241123 is an equidigital number, since it uses as much as digits as its factorization.

11131241123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740004.

The product of its digits is 144, while the sum is 20.

Adding to 11131241123 its reverse (32114213111), we get a palindrome (43245454234).

The spelling of 11131241123 in words is "eleven billion, one hundred thirty-one million, two hundred forty-one thousand, one hundred twenty-three".