281235 has 8 divisors (see below), whose sum is σ = 450000. Its totient is φ = 149984.

The previous prime is 281233. The next prime is 281243. The reversal of 281235 is 532182.

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

It is a cyclic number.

It is not a de Polignac number, because 281235 - 2¹ = 281233 is a prime.

281235 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (281233) 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, 9360 + ... + 9389.

It is an arithmetic number, because the mean of its divisors is an integer number (56250).

2²⁸¹²³⁵ is an apocalyptic number.

281235 is a deficient number, since it is larger than the sum of its proper divisors (168765).

281235 is a wasteful number, since it uses less digits than its factorization.

281235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18757.

The product of its digits is 480, while the sum is 21.

The square root of 281235 is about 530.3159435657. The cubic root of 281235 is about 65.5173700606.

The spelling of 281235 in words is "two hundred eighty-one thousand, two hundred thirty-five".