281112 has 64 divisors (see below), whose sum is σ = 816480. Its totient is φ = 79872.

The previous prime is 281081. The next prime is 281117. The reversal of 281112 is 211182.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 281091 and 281100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281117) by changing a digit.

281112 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 15 ways as a sum of consecutive naturals, for example, 5278 + ... + 5330.

2²⁸¹¹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408240).

281112 is an abundant number, since it is smaller than the sum of its proper divisors (535368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281112 is a wasteful number, since it uses less digits than its factorization.

281112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 88 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 281112 is about 530.1999622784. The cubic root of 281112 is about 65.5078171817.

Adding to 281112 its reverse (211182), we get a palindrome (492294).

It can be divided in two parts, 281 and 112, that added together give a palindrome (393).

The spelling of 281112 in words is "two hundred eighty-one thousand, one hundred twelve".