212321030313 has 16 divisors (see below), whose sum is σ = 323947934720. Its totient is φ = 121172130576.

The previous prime is 212321030249. The next prime is 212321030359. The reversal of 212321030313 is 313030123212.

212321030313 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 212321030313 - 2⁶ = 212321030249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212321030313.

It is not an unprimeable number, because it can be changed into a prime (212321030393) 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 15 ways as a sum of consecutive naturals, for example, 6406933 + ... + 6439986.

It is an arithmetic number, because the mean of its divisors is an integer number (20246745920).

Almost surely, 2^212321030313 is an apocalyptic number.

It is an amenable number.

212321030313 is a deficient number, since it is larger than the sum of its proper divisors (111626904407).

212321030313 is a wasteful number, since it uses less digits than its factorization.

212321030313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12847716.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212321030313 its reverse (313030123212), we get a palindrome (525351153525).

The spelling of 212321030313 in words is "two hundred twelve billion, three hundred twenty-one million, thirty thousand, three hundred thirteen".