281229 has 8 divisors (see below), whose sum is σ = 403872. Its totient is φ = 173040.

The previous prime is 281227. The next prime is 281233. The reversal of 281229 is 922182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 281229 - 2¹ = 281227 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 281199 and 281208.

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 7 ways as a sum of consecutive naturals, for example, 3567 + ... + 3644.

It is an arithmetic number, because the mean of its divisors is an integer number (50484).

2²⁸¹²²⁹ is an apocalyptic number.

It is an amenable number.

281229 is a deficient number, since it is larger than the sum of its proper divisors (122643).

281229 is a wasteful number, since it uses less digits than its factorization.

281229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227.

The product of its digits is 576, while the sum is 24.

The square root of 281229 is about 530.3102865304. The cubic root of 281229 is about 65.5169041311.

The spelling of 281229 in words is "two hundred eighty-one thousand, two hundred twenty-nine".