228231 has 16 divisors (see below), whose sum is σ = 345600. Its totient is φ = 148824.

The previous prime is 228223. The next prime is 228233. The reversal of 228231 is 132822.

It is a happy number.

228231 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228231 - 2³ = 228223 is a prime.

It is a super-2 number, since 2×228231² = 104178778722, which contains 22 as substring.

228231 is strictly pandigital in base 7.

228231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2²²⁸²³¹ is an apocalyptic number.

228231 is a deficient number, since it is larger than the sum of its proper divisors (117369).

228231 is a wasteful number, since it uses less digits than its factorization.

228231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 228231 is about 477.7352823479. The cubic root of 228231 is about 61.1117721385. Note that the first 3 decimals are identical.

The spelling of 228231 in words is "two hundred twenty-eight thousand, two hundred thirty-one".