213231011313 has 4 divisors (see below), whose sum is σ = 284308015088. Its totient is φ = 142154007540.

The previous prime is 213231011303. The next prime is 213231011317. The reversal of 213231011313 is 313110132312.

It is a happy number.

213231011313 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213231011313 - 2⁶ = 213231011249 is a prime.

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 213231011313.

It is not an unprimeable number, because it can be changed into a prime (213231011317) 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, 35538501883 + ... + 35538501888.

It is an arithmetic number, because the mean of its divisors is an integer number (71077003772).

Almost surely, 2^213231011313 is an apocalyptic number.

It is an amenable number.

213231011313 is a deficient number, since it is larger than the sum of its proper divisors (71077003775).

213231011313 is an equidigital number, since it uses as much as digits as its factorization.

213231011313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71077003774.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 213231011313 its reverse (313110132312), we get a palindrome (526341143625).

The spelling of 213231011313 in words is "two hundred thirteen billion, two hundred thirty-one million, eleven thousand, three hundred thirteen".