213304313 has 4 divisors (see below), whose sum is σ = 213336948. Its totient is φ = 213271680.

The previous prime is 213304307. The next prime is 213304361. The reversal of 213304313 is 313403312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128074489 + 85229824 = 11317^2 + 9232^2 .

It is a cyclic number.

It is not a de Polignac number, because 213304313 - 2⁶ = 213304249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213304363) 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 3 ways as a sum of consecutive naturals, for example, 2756 + ... + 20837.

It is an arithmetic number, because the mean of its divisors is an integer number (53334237).

Almost surely, 2^213304313 is an apocalyptic number.

It is an amenable number.

213304313 is a deficient number, since it is larger than the sum of its proper divisors (32635).

213304313 is an equidigital number, since it uses as much as digits as its factorization.

213304313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32634.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 213304313 is about 14604.9413898174. The cubic root of 213304313 is about 597.4935375082.

Adding to 213304313 its reverse (313403312), we get a palindrome (526707625).

The spelling of 213304313 in words is "two hundred thirteen million, three hundred four thousand, three hundred thirteen".