12310312021 has 16 divisors (see below), whose sum is σ = 14879618560. Its totient is φ = 9948944880.

The previous prime is 12310312013. The next prime is 12310312037. The reversal of 12310312021 is 12021301321.

12310312021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12310312021 - 2³ = 12310312013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12310311986 and 12310312004.

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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191271 + ... + 247396.

It is an arithmetic number, because the mean of its divisors is an integer number (929976160).

Almost surely, 2^12310312021 is an apocalyptic number.

It is an amenable number.

12310312021 is a deficient number, since it is larger than the sum of its proper divisors (2569306539).

12310312021 is a wasteful number, since it uses less digits than its factorization.

12310312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438904.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12310312021 its reverse (12021301321), we get a palindrome (24331613342).

The spelling of 12310312021 in words is "twelve billion, three hundred ten million, three hundred twelve thousand, twenty-one".