213021330311 has 4 divisors (see below), whose sum is σ = 213030589872. Its totient is φ = 213012070752.

The previous prime is 213021330289. The next prime is 213021330341. The reversal of 213021330311 is 113033120312.

213021330311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213021330311 - 2¹⁴ = 213021313927 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 (213021330341) 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, 4595186 + ... + 4641311.

It is an arithmetic number, because the mean of its divisors is an integer number (53257647468).

Almost surely, 2^213021330311 is an apocalyptic number.

213021330311 is a deficient number, since it is larger than the sum of its proper divisors (9259561).

213021330311 is an equidigital number, since it uses as much as digits as its factorization.

213021330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259560.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213021330311 its reverse (113033120312), we get a palindrome (326054450623).

The spelling of 213021330311 in words is "two hundred thirteen billion, twenty-one million, three hundred thirty thousand, three hundred eleven".