71711 has 2 divisors, whose sum is σ = 71712. Its totient is φ = 71710.
The previous prime is 71707. The next prime is 71713. The reversal of 71711 is 11717.
It is a strong prime.
It is an emirp because it is prime and its reverse (11717) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 71711 - 22 = 71707 is a prime.
Together with 71713, it forms a pair of twin primes.
It is a Chen prime.
It is an Ulam number.
It is a plaindrome in base 12.
It is a self number, because there is not a number n which added to its sum of digits gives 71711.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (71713) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35855 + 35856.
It is an arithmetic number, because the mean of its divisors is an integer number (35856).
271711 is an apocalyptic number.
71711 is a deficient number, since it is larger than the sum of its proper divisors (1).
71711 is an equidigital number, since it uses as much as digits as its factorization.
71711 is an evil number, because the sum of its binary digits is even.
The product of its digits is 49, while the sum is 17.
The square root of 71711 is about 267.7890961186. The cubic root of 71711 is about 41.5459403192.
It can be divided in two parts, 717 and 11, that multiplied together give a palindrome (7887).
The spelling of 71711 in words is "seventy-one thousand, seven hundred eleven", and thus it is an iban number.
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