138271 has 4 divisors (see below), whose sum is σ = 158032. Its totient is φ = 118512.

The previous prime is 138251. The next prime is 138283. The reversal of 138271 is 172831.

138271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172831 = 401 ⋅431.

It is a cyclic number.

It is not a de Polignac number, because 138271 - 2⁵ = 138239 is a prime.

138271 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138241) 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, 9870 + ... + 9883.

It is an arithmetic number, because the mean of its divisors is an integer number (39508).

2¹³⁸²⁷¹ is an apocalyptic number.

138271 is a deficient number, since it is larger than the sum of its proper divisors (19761).

138271 is an equidigital number, since it uses as much as digits as its factorization.

138271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19760.

The product of its digits is 336, while the sum is 22.

The square root of 138271 is about 371.8480872615. The cubic root of 138271 is about 51.7102972878.

The spelling of 138271 in words is "one hundred thirty-eight thousand, two hundred seventy-one".