231371 has 4 divisors (see below), whose sum is σ = 264432. Its totient is φ = 198312.

The previous prime is 231367. The next prime is 231379. The reversal of 231371 is 173132.

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 231371 - 2² = 231367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231379) 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, 16520 + ... + 16533.

It is an arithmetic number, because the mean of its divisors is an integer number (66108).

2²³¹³⁷¹ is an apocalyptic number.

231371 is a deficient number, since it is larger than the sum of its proper divisors (33061).

231371 is an equidigital number, since it uses as much as digits as its factorization.

231371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33060.

The product of its digits is 126, while the sum is 17.

The square root of 231371 is about 481.0103948981. The cubic root of 231371 is about 61.3907550087.

The spelling of 231371 in words is "two hundred thirty-one thousand, three hundred seventy-one".