231867 has 6 divisors (see below), whose sum is σ = 334932. Its totient is φ = 154572.

The previous prime is 231859. The next prime is 231871. The reversal of 231867 is 768132.

It is not a de Polignac number, because 231867 - 2³ = 231859 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 231867.

It is not an unprimeable number, because it can be changed into a prime (231827) 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 5 ways as a sum of consecutive naturals, for example, 12873 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (55822).

2²³¹⁸⁶⁷ is an apocalyptic number.

231867 is a deficient number, since it is larger than the sum of its proper divisors (103065).

231867 is a wasteful number, since it uses less digits than its factorization.

231867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25769 (or 25766 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 231867 is about 481.5257002487. The cubic root of 231867 is about 61.4345923687.

Adding to 231867 its reverse (768132), we get a palindrome (999999).

The spelling of 231867 in words is "two hundred thirty-one thousand, eight hundred sixty-seven".