281215 has 8 divisors (see below), whose sum is σ = 368208. Its totient is φ = 204480.

The previous prime is 281207. The next prime is 281227. The reversal of 281215 is 512182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 281215 - 2³ = 281207 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 281192 and 281201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2502 + ... + 2611.

It is an arithmetic number, because the mean of its divisors is an integer number (46026).

2²⁸¹²¹⁵ is an apocalyptic number.

281215 is a deficient number, since it is larger than the sum of its proper divisors (86993).

281215 is a wasteful number, since it uses less digits than its factorization.

281215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129.

The product of its digits is 160, while the sum is 19.

The square root of 281215 is about 530.2970865468. The cubic root of 281215 is about 65.5158169366.

Adding to 281215 its reverse (512182), we get a palindrome (793397).

It can be divided in two parts, 281 and 215, that added together give a triangular number (496 = T₃₁).

The spelling of 281215 in words is "two hundred eighty-one thousand, two hundred fifteen".