12310312111 has 4 divisors (see below), whose sum is σ = 12310538112. Its totient is φ = 12310086112.

The previous prime is 12310312073. The next prime is 12310312121. The reversal of 12310312111 is 11121301321.

It is a happy number.

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-12310312111 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 (12310312121) 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, 24375 + ... + 158791.

It is an arithmetic number, because the mean of its divisors is an integer number (3077634528).

Almost surely, 2^12310312111 is an apocalyptic number.

12310312111 is a deficient number, since it is larger than the sum of its proper divisors (226001).

12310312111 is an equidigital number, since it uses as much as digits as its factorization.

12310312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226000.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12310312111 its reverse (11121301321), we get a palindrome (23431613432).

The spelling of 12310312111 in words is "twelve billion, three hundred ten million, three hundred twelve thousand, one hundred eleven".