23423111111 has 4 divisors (see below), whose sum is σ = 23521116000. Its totient is φ = 23325106224.

The previous prime is 23423111093. The next prime is 23423111119. The reversal of 23423111111 is 11111132432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23423111111 is a prime.

It is a Duffinian number.

23423111111 is a modest number, since divided by 111111 gives 23423 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423111119) 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, 49002086 + ... + 49002563.

It is an arithmetic number, because the mean of its divisors is an integer number (5880279000).

Almost surely, 2^23423111111 is an apocalyptic number.

23423111111 is a deficient number, since it is larger than the sum of its proper divisors (98004889).

23423111111 is an equidigital number, since it uses as much as digits as its factorization.

23423111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98004888.

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

Adding to 23423111111 its reverse (11111132432), we get a palindrome (34534243543).

The spelling of 23423111111 in words is "twenty-three billion, four hundred twenty-three million, one hundred eleven thousand, one hundred eleven".