11123004423 has 4 divisors (see below), whose sum is σ = 14830672568. Its totient is φ = 7415336280.

The previous prime is 11123004419. The next prime is 11123004467. The reversal of 11123004423 is 32440032111.

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

It is not a de Polignac number, because 11123004423 - 2² = 11123004419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11123004423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123004223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853834068 + ... + 1853834073.

It is an arithmetic number, because the mean of its divisors is an integer number (3707668142).

Almost surely, 2^11123004423 is an apocalyptic number.

11123004423 is a deficient number, since it is larger than the sum of its proper divisors (3707668145).

11123004423 is an equidigital number, since it uses as much as digits as its factorization.

11123004423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707668144.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11123004423 its reverse (32440032111), we get a palindrome (43563036534).

The spelling of 11123004423 in words is "eleven billion, one hundred twenty-three million, four thousand, four hundred twenty-three".