228317 has 4 divisors (see below), whose sum is σ = 236220. Its totient is φ = 220416.

The previous prime is 228311. The next prime is 228331. The reversal of 228317 is 713822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51076 + 177241 = 226^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 228317 - 2⁴ = 228301 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 228292 and 228301.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228317.

It is not an unprimeable number, because it can be changed into a prime (228311) 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, 3908 + ... + 3965.

It is an arithmetic number, because the mean of its divisors is an integer number (59055).

2²²⁸³¹⁷ is an apocalyptic number.

It is an amenable number.

228317 is a deficient number, since it is larger than the sum of its proper divisors (7903).

228317 is an equidigital number, since it uses as much as digits as its factorization.

228317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7902.

The product of its digits is 672, while the sum is 23.

The square root of 228317 is about 477.8252818761. The cubic root of 228317 is about 61.1194470416.

It can be divided in two parts, 228 and 317, that added together give a palindrome (545).

The spelling of 228317 in words is "two hundred twenty-eight thousand, three hundred seventeen".