281263 has 8 divisors (see below), whose sum is σ = 298496. Its totient is φ = 264600.

The previous prime is 281251. The next prime is 281273. The reversal of 281263 is 362182.

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 281263 - 2⁹ = 280751 is a prime.

It is a Duffinian number.

281263 is a lucky number.

It is a plaindrome in base 16.

It is a congruent 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, 1228 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (37312).

2²⁸¹²⁶³ is an apocalyptic number.

281263 is a deficient number, since it is larger than the sum of its proper divisors (17233).

281263 is a wasteful number, since it uses less digits than its factorization.

281263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 576, while the sum is 22.

The square root of 281263 is about 530.3423422658. The cubic root of 281263 is about 65.5195443104.

The spelling of 281263 in words is "two hundred eighty-one thousand, two hundred sixty-three".