191371 has 4 divisors (see below), whose sum is σ = 198000. Its totient is φ = 184744.

The previous prime is 191353. The next prime is 191413. The reversal of 191371 is 173191.

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 191371 - 2⁵ = 191339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191341) 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 3 ways as a sum of consecutive naturals, for example, 3271 + ... + 3328.

It is an arithmetic number, because the mean of its divisors is an integer number (49500).

2¹⁹¹³⁷¹ is an apocalyptic number.

191371 is a deficient number, since it is larger than the sum of its proper divisors (6629).

191371 is an equidigital number, since it uses as much as digits as its factorization.

191371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6628.

The product of its digits is 189, while the sum is 22.

The square root of 191371 is about 437.4597124308. The cubic root of 191371 is about 57.6269156294.

The spelling of 191371 in words is "one hundred ninety-one thousand, three hundred seventy-one".