281093 has 4 divisors (see below), whose sum is σ = 282828. Its totient is φ = 279360.

The previous prime is 281081. The next prime is 281117. The reversal of 281093 is 390182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12769 + 268324 = 113^2 + 518^2 .

It is a cyclic number.

It is not a de Polignac number, because 281093 - 2⁸ = 280837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281093.

It is not an unprimeable number, because it can be changed into a prime (281023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (70707).

2²⁸¹⁰⁹³ is an apocalyptic number.

It is an amenable number.

281093 is a deficient number, since it is larger than the sum of its proper divisors (1735).

281093 is a wasteful number, since it uses less digits than its factorization.

281093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 281093 is about 530.1820442075. The cubic root of 281093 is about 65.5063412853.

The spelling of 281093 in words is "two hundred eighty-one thousand, ninety-three".