212711 has 4 divisors (see below), whose sum is σ = 213672. Its totient is φ = 211752.

The previous prime is 212701. The next prime is 212777. The reversal of 212711 is 117212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (53418).

2²¹²⁷¹¹ is an apocalyptic number.

212711 is a deficient number, since it is larger than the sum of its proper divisors (961).

212711 is an equidigital number, since it uses as much as digits as its factorization.

212711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 28, while the sum is 14.

The square root of 212711 is about 461.2060277143. The cubic root of 212711 is about 59.6939040395.

Adding to 212711 its reverse (117212), we get a palindrome (329923).

The spelling of 212711 in words is "two hundred twelve thousand, seven hundred eleven", and thus it is an iban number.