243287 has 8 divisors (see below), whose sum is σ = 281232. Its totient is φ = 208000.

The previous prime is 243263. The next prime is 243301. The reversal of 243287 is 782342.

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

It is a cyclic number.

It is not a de Polignac number, because 243287 - 2⁸ = 243031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2²⁴³²⁸⁷ is an apocalyptic number.

243287 is a deficient number, since it is larger than the sum of its proper divisors (37945).

243287 is a wasteful number, since it uses less digits than its factorization.

243287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its digits is 2688, while the sum is 26.

The square root of 243287 is about 493.2413202480. The cubic root of 243287 is about 62.4270722712.

The spelling of 243287 in words is "two hundred forty-three thousand, two hundred eighty-seven".