23143212111 has 4 divisors (see below), whose sum is σ = 30857616152. Its totient is φ = 15428808072.

The previous prime is 23143212047. The next prime is 23143212121. The reversal of 23143212111 is 11121234132.

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

It is not a de Polignac number, because 23143212111 - 2⁶ = 23143212047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143212121) 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, 3857202016 + ... + 3857202021.

It is an arithmetic number, because the mean of its divisors is an integer number (7714404038).

Almost surely, 2^23143212111 is an apocalyptic number.

23143212111 is a deficient number, since it is larger than the sum of its proper divisors (7714404041).

23143212111 is an equidigital number, since it uses as much as digits as its factorization.

23143212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714404040.

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

Adding to 23143212111 its reverse (11121234132), we get a palindrome (34264446243).

The spelling of 23143212111 in words is "twenty-three billion, one hundred forty-three million, two hundred twelve thousand, one hundred eleven".