271309 has 4 divisors (see below), whose sum is σ = 274204. Its totient is φ = 268416.

The previous prime is 271289. The next prime is 271333. The reversal of 271309 is 903172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 108900 = 403^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 271309 - 2⁵ = 271277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (68551).

2²⁷¹³⁰⁹ is an apocalyptic number.

It is an amenable number.

271309 is a deficient number, since it is larger than the sum of its proper divisors (2895).

271309 is an equidigital number, since it uses as much as digits as its factorization.

271309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 271309 is about 520.8733051328. The cubic root of 271309 is about 64.7373225430.

The spelling of 271309 in words is "two hundred seventy-one thousand, three hundred nine".