381271 has 12 divisors (see below), whose sum is σ = 440496. Its totient is φ = 329120.

The previous prime is 381253. The next prime is 381287. The reversal of 381271 is 172183.

It is not a de Polignac number, because 381271 - 2⁵ = 381239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2715 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (36708).

2³⁸¹²⁷¹ is an apocalyptic number.

381271 is a deficient number, since it is larger than the sum of its proper divisors (59225).

381271 is a wasteful number, since it uses less digits than its factorization.

381271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 171 counting only the distinct ones).

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

The square root of 381271 is about 617.4714568302. The cubic root of 381271 is about 72.5122294075.

It can be divided in two parts, 3812 and 71, that added together give a palindrome (3883).

The spelling of 381271 in words is "three hundred eighty-one thousand, two hundred seventy-one".