281713 has 4 divisors (see below), whose sum is σ = 296560. Its totient is φ = 266868.

The previous prime is 281683. The next prime is 281717. The reversal of 281713 is 317182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 317182 = 2 ⋅158591.

It is a cyclic number.

It is not a de Polignac number, because 281713 - 2¹³ = 273521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281717) 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, 7395 + ... + 7432.

It is an arithmetic number, because the mean of its divisors is an integer number (74140).

2²⁸¹⁷¹³ is an apocalyptic number.

It is an amenable number.

281713 is a deficient number, since it is larger than the sum of its proper divisors (14847).

281713 is a wasteful number, since it uses less digits than its factorization.

281713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14846.

The product of its digits is 336, while the sum is 22.

The square root of 281713 is about 530.7664269714. The cubic root of 281713 is about 65.5544678339.

Adding to 281713 its reverse (317182), we get a palindrome (598895).

The spelling of 281713 in words is "two hundred eighty-one thousand, seven hundred thirteen".