287347 has 2 divisors, whose sum is σ = 287348. Its totient is φ = 287346.

The previous prime is 287341. The next prime is 287383. The reversal of 287347 is 743782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287347 - 2⁷ = 287219 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (287341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143673 + 143674.

It is an arithmetic number, because the mean of its divisors is an integer number (143674).

2²⁸⁷³⁴⁷ is an apocalyptic number.

287347 is a deficient number, since it is larger than the sum of its proper divisors (1).

287347 is an equidigital number, since it uses as much as digits as its factorization.

287347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 287347 is about 536.0475725157. The cubic root of 287347 is about 65.9885961319.

The spelling of 287347 in words is "two hundred eighty-seven thousand, three hundred forty-seven".