228123 has 32 divisors (see below), whose sum is σ = 414720. Its totient is φ = 120960.

The previous prime is 228113. The next prime is 228127. The reversal of 228123 is 321822.

228123 = T₄₂ + T₄₃ + ... + T₁₁₂.

It is a happy number.

It is not a de Polignac number, because 228123 - 2⁹ = 227611 is a prime.

It is a super-3 number, since 3×228123³ = 35614633338290601, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228096 and 228105.

It is not an unprimeable number, because it can be changed into a prime (228127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3178 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2²²⁸¹²³ is an apocalyptic number.

228123 is a deficient number, since it is larger than the sum of its proper divisors (186597).

228123 is a wasteful number, since it uses less digits than its factorization.

228123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 98 counting only the distinct ones).

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

The square root of 228123 is about 477.6222356633. The cubic root of 228123 is about 61.1021311568.

Adding to 228123 its reverse (321822), we get a palindrome (549945).

It can be divided in two parts, 2281 and 23, that added together give a square (2304 = 48²).

The spelling of 228123 in words is "two hundred twenty-eight thousand, one hundred twenty-three".