23131112311 has 4 divisors (see below), whose sum is σ = 23695285824. Its totient is φ = 22566938800.

The previous prime is 23131112299. The next prime is 23131112321. The reversal of 23131112311 is 11321113132.

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

It is a cyclic number.

It is not a de Polignac number, because 23131112311 - 2²¹ = 23129015159 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 (23131112321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282086695 + ... + 282086776.

It is an arithmetic number, because the mean of its divisors is an integer number (5923821456).

Almost surely, 2^23131112311 is an apocalyptic number.

23131112311 is a deficient number, since it is larger than the sum of its proper divisors (564173513).

23131112311 is an equidigital number, since it uses as much as digits as its factorization.

23131112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564173512.

The product of its digits is 108, while the sum is 19.

Adding to 23131112311 its reverse (11321113132), we get a palindrome (34452225443).

The spelling of 23131112311 in words is "twenty-three billion, one hundred thirty-one million, one hundred twelve thousand, three hundred eleven".