11131253123 has 16 divisors (see below), whose sum is σ = 11607655104. Its totient is φ = 10664478720.

The previous prime is 11131253053. The next prime is 11131253209. The reversal of 11131253123 is 32135213111.

It is a cyclic number.

It is not a de Polignac number, because 11131253123 - 2¹⁸ = 11130990979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131253323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564411 + ... + 2568747.

It is an arithmetic number, because the mean of its divisors is an integer number (725478444).

Almost surely, 2^11131253123 is an apocalyptic number.

11131253123 is a deficient number, since it is larger than the sum of its proper divisors (476401981).

11131253123 is an equidigital number, since it uses as much as digits as its factorization.

11131253123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422.

The product of its digits is 540, while the sum is 23.

Adding to 11131253123 its reverse (32135213111), we get a palindrome (43266466234).

The spelling of 11131253123 in words is "eleven billion, one hundred thirty-one million, two hundred fifty-three thousand, one hundred twenty-three".