86231 has 4 divisors (see below), whose sum is σ = 87912. Its totient is φ = 84552.

The previous prime is 86209. The next prime is 86239. The reversal of 86231 is 13268.

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 86231 - 2¹⁴ = 69847 is a prime.

It is a super-2 number, since 2×86231² = 14871570722, 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 (86239) 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, 761 + ... + 866.

It is an arithmetic number, because the mean of its divisors is an integer number (21978).

2⁸⁶²³¹ is an apocalyptic number.

86231 is a deficient number, since it is larger than the sum of its proper divisors (1681).

86231 is a wasteful number, since it uses less digits than its factorization.

86231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its digits is 288, while the sum is 20.

The square root of 86231 is about 293.6511535819. The cubic root of 86231 is about 44.1795350344.

Adding to 86231 its reverse (13268), we get a palindrome (99499).

The spelling of 86231 in words is "eighty-six thousand, two hundred thirty-one".