4231 has 2 divisors, whose sum is σ = 4232.
Its totient is φ = 4230.
The previous prime is 4229. The next prime is 4241. The reversal of 4231 is 1324.
Adding to 4231 its reverse (1324), we get a palindrome (5555).
It can be divided in two parts, 423 and 1, that added together give a palindrome (424).
4231 = 242 + 252 + ... + 292.
It is an a-pointer prime, because the next prime (4241) can be obtained adding 4231 to its sum of digits (10).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 4231 - 21 = 4229 is a prime.
It is a super-2 number, since 2×42312 = 35802722, which contains 22 as substring.
Together with 4229, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (4201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115 + 2116.
It is an arithmetic number, because the mean of its divisors is an integer number (2116).
24231 is an apocalyptic number.
4231 is a deficient number, since it is larger than the sum of its proper divisors (1).
4231 is an equidigital number, since it uses as much as digits as its factorization.
4231 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 24, while the sum is 10.
The square root of 4231 is about 65.0461374718.
The cubic root of 4231 is about 16.1738846620.
The spelling of 4231 in words is "four thousand, two hundred thirty-one".