213323311 has 2 divisors, whose sum is σ = 213323312. Its totient is φ = 213323310.

The previous prime is 213323309. The next prime is 213323329. The reversal of 213323311 is 113323312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213323311 - 2¹ = 213323309 is a prime.

It is a super-3 number, since 3×213323311³ (a number of 26 digits) contains 333 as substring.

Together with 213323309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213323351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106661655 + 106661656.

It is an arithmetic number, because the mean of its divisors is an integer number (106661656).

Almost surely, 2^213323311 is an apocalyptic number.

213323311 is a deficient number, since it is larger than the sum of its proper divisors (1).

213323311 is an equidigital number, since it uses as much as digits as its factorization.

213323311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 19.

The square root of 213323311 is about 14605.5917716469. The cubic root of 213323311 is about 597.5112756169.

Adding to 213323311 its reverse (113323312), we get a palindrome (326646623).

Subtracting from 213323311 its reverse (113323312), we obtain a palindrome (99999999).

The spelling of 213323311 in words is "two hundred thirteen million, three hundred twenty-three thousand, three hundred eleven".