286231 has 4 divisors (see below), whose sum is σ = 312264. Its totient is φ = 260200.

The previous prime is 286199. The next prime is 286243. The reversal of 286231 is 132682.

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 286231 - 2⁵ = 286199 is a prime.

It is a super-2 number, since 2×286231² = 163856370722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286831) 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, 13000 + ... + 13021.

It is an arithmetic number, because the mean of its divisors is an integer number (78066).

2²⁸⁶²³¹ is an apocalyptic number.

286231 is a deficient number, since it is larger than the sum of its proper divisors (26033).

286231 is a wasteful number, since it uses less digits than its factorization.

286231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26032.

The product of its digits is 576, while the sum is 22.

The square root of 286231 is about 535.0056074472. The cubic root of 286231 is about 65.9030563278.

It can be divided in two parts, 286 and 231, that multiplied together give a palindrome (66066).

The spelling of 286231 in words is "two hundred eighty-six thousand, two hundred thirty-one".