211344223 has 2 divisors, whose sum is σ = 211344224. Its totient is φ = 211344222.

The previous prime is 211344191. The next prime is 211344233. The reversal of 211344223 is 322443112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211344223 - 2⁵ = 211344191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211344194 and 211344203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211344233) 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 as a sum of consecutive naturals, namely, 105672111 + 105672112.

It is an arithmetic number, because the mean of its divisors is an integer number (105672112).

Almost surely, 2^211344223 is an apocalyptic number.

211344223 is a deficient number, since it is larger than the sum of its proper divisors (1).

211344223 is an equidigital number, since it uses as much as digits as its factorization.

211344223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 22.

The square root of 211344223 is about 14537.6828621345. The cubic root of 211344223 is about 595.6577458951.

Adding to 211344223 its reverse (322443112), we get a palindrome (533787335).

The spelling of 211344223 in words is "two hundred eleven million, three hundred forty-four thousand, two hundred twenty-three".