281339 has 2 divisors, whose sum is σ = 281340. Its totient is φ = 281338.

The previous prime is 281327. The next prime is 281353. The reversal of 281339 is 933182.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (281539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140669 + 140670.

It is an arithmetic number, because the mean of its divisors is an integer number (140670).

2²⁸¹³³⁹ is an apocalyptic number.

281339 is a deficient number, since it is larger than the sum of its proper divisors (1).

281339 is an equidigital number, since it uses as much as digits as its factorization.

281339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 281339 is about 530.4139892574. The cubic root of 281339 is about 65.5254451185.

It can be divided in two parts, 281 and 339, that multiplied together give a palindrome (95259).

The spelling of 281339 in words is "two hundred eighty-one thousand, three hundred thirty-nine".