281223 has 6 divisors (see below), whose sum is σ = 406224. Its totient is φ = 187476.

The previous prime is 281207. The next prime is 281227. The reversal of 281223 is 322182.

It is a happy number.

It is not a de Polignac number, because 281223 - 2⁴ = 281207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 281196 and 281205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15615 + ... + 15632.

It is an arithmetic number, because the mean of its divisors is an integer number (67704).

2²⁸¹²²³ is an apocalyptic number.

281223 is a deficient number, since it is larger than the sum of its proper divisors (125001).

281223 is a wasteful number, since it uses less digits than its factorization.

281223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31253 (or 31250 counting only the distinct ones).

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

The square root of 281223 is about 530.3046294348. The cubic root of 281223 is about 65.5164381950.

It can be divided in two parts, 2 and 81223, that added together give a square (81225 = 285²).

The spelling of 281223 in words is "two hundred eighty-one thousand, two hundred twenty-three".