211343071 has 2 divisors, whose sum is σ = 211343072. Its totient is φ = 211343070.

The previous prime is 211343051. The next prime is 211343081. The reversal of 211343071 is 170343112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211343071 - 2⁹ = 211342559 is a prime.

It is a super-2 number, since 2×211343071² = 89331787319422082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211343051) 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, 105671535 + 105671536.

It is an arithmetic number, because the mean of its divisors is an integer number (105671536).

Almost surely, 2^211343071 is an apocalyptic number.

211343071 is a deficient number, since it is larger than the sum of its proper divisors (1).

211343071 is an equidigital number, since it uses as much as digits as its factorization.

211343071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 211343071 is about 14537.6432409108. The cubic root of 211343071 is about 595.6566636181.

Adding to 211343071 its reverse (170343112), we get a palindrome (381686183).

The spelling of 211343071 in words is "two hundred eleven million, three hundred forty-three thousand, seventy-one".