281116 has 12 divisors (see below), whose sum is σ = 536760. Its totient is φ = 127760.

The previous prime is 281081. The next prime is 281117. The reversal of 281116 is 611182.

It is a junction number, because it is equal to n+sod(n) for n = 281093 and 281102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281117) 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 3 ways as a sum of consecutive naturals, for example, 3151 + ... + 3238.

It is an arithmetic number, because the mean of its divisors is an integer number (44730).

2²⁸¹¹¹⁶ is an apocalyptic number.

It is an amenable number.

281116 is a deficient number, since it is larger than the sum of its proper divisors (255644).

281116 is a wasteful number, since it uses less digits than its factorization.

281116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404 (or 6402 counting only the distinct ones).

The product of its digits is 96, while the sum is 19.

The square root of 281116 is about 530.2037344267. The cubic root of 281116 is about 65.5081278883.

Adding to 281116 its reverse (611182), we get a palindrome (892298).

It can be divided in two parts, 2 and 81116, that added together give a palindrome (81118).

The spelling of 281116 in words is "two hundred eighty-one thousand, one hundred sixteen".