228307 has 2 divisors, whose sum is σ = 228308. Its totient is φ = 228306.

The previous prime is 228301. The next prime is 228311. The reversal of 228307 is 703822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228307 - 2³ = 228299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114153 + 114154.

It is an arithmetic number, because the mean of its divisors is an integer number (114154).

2²²⁸³⁰⁷ is an apocalyptic number.

228307 is a deficient number, since it is larger than the sum of its proper divisors (1).

228307 is an equidigital number, since it uses as much as digits as its factorization.

228307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 228307 is about 477.8148176857. The cubic root of 228307 is about 61.1185547101.

It can be divided in two parts, 228 and 307, that multiplied together give a palindrome (69996).

The spelling of 228307 in words is "two hundred twenty-eight thousand, three hundred seven".