213320311 has 2 divisors, whose sum is σ = 213320312. Its totient is φ = 213320310.

The previous prime is 213320293. The next prime is 213320321. The reversal of 213320311 is 113023312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213320311 - 2⁷ = 213320183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213320321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106660155 + 106660156.

It is an arithmetic number, because the mean of its divisors is an integer number (106660156).

Almost surely, 2^213320311 is an apocalyptic number.

213320311 is a deficient number, since it is larger than the sum of its proper divisors (1).

213320311 is an equidigital number, since it uses as much as digits as its factorization.

213320311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213320311 is about 14605.4890708939. The cubic root of 213320311 is about 597.5084746381.

Adding to 213320311 its reverse (113023312), we get a palindrome (326343623).

The spelling of 213320311 in words is "two hundred thirteen million, three hundred twenty thousand, three hundred eleven".