281115 has 12 divisors (see below), whose sum is σ = 487344. Its totient is φ = 149904.

The previous prime is 281081. The next prime is 281117. The reversal of 281115 is 511182.

It is not a de Polignac number, because 281115 - 2⁸ = 280859 is a prime.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3079 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (40612).

2²⁸¹¹¹⁵ is an apocalyptic number.

281115 is a deficient number, since it is larger than the sum of its proper divisors (206229).

281115 is a wasteful number, since it uses less digits than its factorization.

281115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6258 (or 6255 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 281115 is about 530.2027913921. The cubic root of 281115 is about 65.5080502119.

Adding to 281115 its reverse (511182), we get a palindrome (792297).

The spelling of 281115 in words is "two hundred eighty-one thousand, one hundred fifteen".