11123144031 has 4 divisors (see below), whose sum is σ = 14830858712. Its totient is φ = 7415429352.

The previous prime is 11123144009. The next prime is 11123144093. The reversal of 11123144031 is 13044132111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11123144031 - 2⁹ = 11123143519 is a prime.

It is a super-2 number, since 2×11123144031² (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 = 11123143989 and 11123144007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123144231) 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 3 ways as a sum of consecutive naturals, for example, 1853857336 + ... + 1853857341.

It is an arithmetic number, because the mean of its divisors is an integer number (3707714678).

Almost surely, 2^11123144031 is an apocalyptic number.

11123144031 is a deficient number, since it is larger than the sum of its proper divisors (3707714681).

11123144031 is an equidigital number, since it uses as much as digits as its factorization.

11123144031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707714680.

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

Adding to 11123144031 its reverse (13044132111), we get a palindrome (24167276142).

The spelling of 11123144031 in words is "eleven billion, one hundred twenty-three million, one hundred forty-four thousand, thirty-one".