281012 has 12 divisors (see below), whose sum is σ = 495936. Its totient is φ = 139320.

The previous prime is 280997. The next prime is 281023. The reversal of 281012 is 210182.

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 281012.

It is an unprimeable number.

281012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437 + ... + 867.

It is an arithmetic number, because the mean of its divisors is an integer number (41328).

2²⁸¹⁰¹² is an apocalyptic number.

It is an amenable number.

281012 is a deficient number, since it is larger than the sum of its proper divisors (214924).

281012 is a wasteful number, since it uses less digits than its factorization.

281012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 281012 is about 530.1056498473. The cubic root of 281012 is about 65.5000485597.

Adding to 281012 its reverse (210182), we get a palindrome (491194).

The spelling of 281012 in words is "two hundred eighty-one thousand, twelve".