12312101311 has 4 divisors (see below), whose sum is σ = 12312383272. Its totient is φ = 12311819352.

The previous prime is 12312101309. The next prime is 12312101357. The reversal of 12312101311 is 11310121321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11310121321 = 227 ⋅49824323.

It is a cyclic number.

It is not a de Polignac number, because 12312101311 - 2¹ = 12312101309 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 (12312201311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59961 + ... + 167986.

It is an arithmetic number, because the mean of its divisors is an integer number (3078095818).

Almost surely, 2^12312101311 is an apocalyptic number.

12312101311 is a deficient number, since it is larger than the sum of its proper divisors (281961).

12312101311 is an equidigital number, since it uses as much as digits as its factorization.

12312101311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281960.

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

Adding to 12312101311 its reverse (11310121321), we get a palindrome (23622222632).

The spelling of 12312101311 in words is "twelve billion, three hundred twelve million, one hundred one thousand, three hundred eleven".