213232213 has 2 divisors, whose sum is σ = 213232214. Its totient is φ = 213232212.

The previous prime is 213232211. The next prime is 213232249. The reversal of 213232213 is 312232312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106874244 + 106357969 = 10338^2 + 10313^2 .

It is a cyclic number.

It is not a de Polignac number, because 213232213 - 2¹ = 213232211 is a prime.

Together with 213232211, 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 (213232211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616106 + 106616107.

It is an arithmetic number, because the mean of its divisors is an integer number (106616107).

Almost surely, 2^213232213 is an apocalyptic number.

It is an amenable number.

213232213 is a deficient number, since it is larger than the sum of its proper divisors (1).

213232213 is an equidigital number, since it uses as much as digits as its factorization.

213232213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 213232213 is about 14602.4728385298. The cubic root of 213232213 is about 597.4262093826.

Adding to 213232213 its reverse (312232312), we get a palindrome (525464525).

Subtracting 213232213 from its reverse (312232312), we obtain a palindrome (99000099).

The spelling of 213232213 in words is "two hundred thirteen million, two hundred thirty-two thousand, two hundred thirteen".