231286 has 8 divisors (see below), whose sum is σ = 378504. Its totient is φ = 105120.

The previous prime is 231277. The next prime is 231289. The reversal of 231286 is 682132.

231286 is nontrivially palindromic in base 14.

231286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10513 = 231286 / (2 + 3 + 1 + 2 + 8 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231289) 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, 5235 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (47313).

2²³¹²⁸⁶ is an apocalyptic number.

231286 is a deficient number, since it is larger than the sum of its proper divisors (147218).

231286 is a wasteful number, since it uses less digits than its factorization.

231286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526.

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

The square root of 231286 is about 480.9220311028. The cubic root of 231286 is about 61.3832362713.

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

The spelling of 231286 in words is "two hundred thirty-one thousand, two hundred eighty-six".