103287 has 4 divisors (see below), whose sum is σ = 137720. Its totient is φ = 68856.

The previous prime is 103237. The next prime is 103289. The reversal of 103287 is 782301.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 103287 - 2¹² = 99191 is a prime.

It is a D-number.

It is a Duffinian number.

103287 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103287.

It is not an unprimeable number, because it can be changed into a prime (103289) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17212 + ... + 17217.

It is an arithmetic number, because the mean of its divisors is an integer number (34430).

2¹⁰³²⁸⁷ is an apocalyptic number.

103287 is a deficient number, since it is larger than the sum of its proper divisors (34433).

103287 is an equidigital number, since it uses as much as digits as its factorization.

103287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34432.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 103287 is about 321.3829491432. The cubic root of 103287 is about 46.9189791693.

Adding to 103287 its reverse (782301), we get a palindrome (885588).

The spelling of 103287 in words is "one hundred three thousand, two hundred eighty-seven".