271391 has 4 divisors (see below), whose sum is σ = 272832. Its totient is φ = 269952.

The previous prime is 271367. The next prime is 271393. The reversal of 271391 is 193172.

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

It is a cyclic number.

It is not a de Polignac number, because 271391 - 2¹⁴ = 255007 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 (271393) 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, 386 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (68208).

2²⁷¹³⁹¹ is an apocalyptic number.

271391 is a deficient number, since it is larger than the sum of its proper divisors (1441).

271391 is a wasteful number, since it uses less digits than its factorization.

271391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its digits is 378, while the sum is 23.

The square root of 271391 is about 520.9520131452. The cubic root of 271391 is about 64.7438439211.

The spelling of 271391 in words is "two hundred seventy-one thousand, three hundred ninety-one".