• 271 can be written using four 4's:
271 has 2 divisors, whose sum is σ = 272. Its totient is φ = 270.
The previous prime is 269. The next prime is 277. The reversal of 271 is 172.
271 is nontrivially palindromic in base 7 and base 15.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 271 - 21 = 269 is a prime.
Together with 269, it forms a pair of twin primes.
It is a house number.
271 is an undulating number in base 7 and base 15.
It is a plaindrome in base 11, base 13 and base 14.
It is a nialpdrome in base 9.
It is a congruent number.
It is a panconsummate number.
It is not a weakly prime, because it can be changed into another prime (277) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135 + 136.
It is an arithmetic number, because the mean of its divisors is an integer number (136).
271 is the 10-th hex number.
271 is a deficient number, since it is larger than the sum of its proper divisors (1).
271 is an equidigital number, since it uses as much as digits as its factorization.
271 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 14, while the sum is 10.
The square root of 271 is about 16.4620776332. The cubic root of 271 is about 6.4712736270.
Subtracting from 271 its reverse (172), we obtain a palindrome (99).
It can be divided in two parts, 27 and 1, that added together give a triangular number (28 = T7).
The spelling of 271 in words is "two hundred seventy-one", and thus it is an aban number and an iban number.
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