281163 has 16 divisors (see below), whose sum is σ = 410400. Its totient is φ = 170496.

The previous prime is 281159. The next prime is 281167. The reversal of 281163 is 361182.

It is an interprime number because it is at equal distance from previous prime (281159) and next prime (281167).

It is not a de Polignac number, because 281163 - 2² = 281159 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (281167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1813 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (25650).

2²⁸¹¹⁶³ is an apocalyptic number.

281163 is a deficient number, since it is larger than the sum of its proper divisors (129237).

281163 is a wasteful number, since it uses less digits than its factorization.

281163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its digits is 288, while the sum is 21.

The square root of 281163 is about 530.2480551591. The cubic root of 281163 is about 65.5117784696.

Subtracting from 281163 its product of digits (288), we obtain a triangular number (280875 = T₇₄₉).

It can be divided in two parts, 28116 and 3, that multiplied together give a palindrome (84348).

The spelling of 281163 in words is "two hundred eighty-one thousand, one hundred sixty-three".