23311111143 has 16 divisors (see below), whose sum is σ = 31596621536. Its totient is φ = 15283261440.

The previous prime is 23311111129. The next prime is 23311111157. The reversal of 23311111143 is 34111111332.

It is an interprime number because it is at equal distance from previous prime (23311111129) and next prime (23311111157).

It is not a de Polignac number, because 23311111143 - 2⁶ = 23311111079 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 (23311111123) 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, 1944255 + ... + 1956207.

It is an arithmetic number, because the mean of its divisors is an integer number (1974788846).

Almost surely, 2^23311111143 is an apocalyptic number.

23311111143 is a deficient number, since it is larger than the sum of its proper divisors (8285510393).

23311111143 is a wasteful number, since it uses less digits than its factorization.

23311111143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22674.

The product of its digits is 216, while the sum is 21.

Adding to 23311111143 its reverse (34111111332), we get a palindrome (57422222475).

The spelling of 23311111143 in words is "twenty-three billion, three hundred eleven million, one hundred eleven thousand, one hundred forty-three".