281349 has 12 divisors (see below), whose sum is σ = 416416. Its totient is φ = 182952.

The previous prime is 281339. The next prime is 281353. The reversal of 281349 is 943182.

It is not a de Polignac number, because 281349 - 2⁵ = 281317 is a prime.

It is a Duffinian number.

It is a Curzon number.

281349 is a lucky number.

It is a plaindrome in base 12.

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 281349.

It is not an unprimeable number, because it can be changed into a prime (281339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24 + ... + 750.

2²⁸¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

281349 is a deficient number, since it is larger than the sum of its proper divisors (135067).

281349 is a wasteful number, since it uses less digits than its factorization.

281349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 773 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 281349 is about 530.4234157727. The cubic root of 281349 is about 65.5262214615.

It can be divided in two parts, 281 and 349, that added together give a triangular number (630 = T₃₅).

The spelling of 281349 in words is "two hundred eighty-one thousand, three hundred forty-nine".