281039 has 8 divisors (see below), whose sum is σ = 317520. Its totient is φ = 246400.

The previous prime is 281033. The next prime is 281053. The reversal of 281039 is 930182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 281039 - 2⁴ = 281023 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 16.

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 281039.

It is not an unprimeable number, because it can be changed into a prime (281033) 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, 122 + ... + 759.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2²⁸¹⁰³⁹ is an apocalyptic number.

281039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

281039 is a deficient number, since it is larger than the sum of its proper divisors (36481).

281039 is a wasteful number, since it uses less digits than its factorization.

281039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

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

The square root of 281039 is about 530.1311158572. The cubic root of 281039 is about 65.5021462692.

It can be divided in two parts, 28 and 1039, that multiplied together give a palindrome (29092).

The spelling of 281039 in words is "two hundred eighty-one thousand, thirty-nine".