285317273 has 12 divisors (see below), whose sum is σ = 312874752. Its totient is φ = 259863360.

The previous prime is 285317257. The next prime is 285317299. The reversal of 285317273 is 372713582.

It is not a de Polignac number, because 285317273 - 2⁴ = 285317257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285319273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6965 + ... + 24882.

It is an arithmetic number, because the mean of its divisors is an integer number (26072896).

Almost surely, 2^285317273 is an apocalyptic number.

It is an amenable number.

285317273 is a deficient number, since it is larger than the sum of its proper divisors (27557479).

285317273 is a wasteful number, since it uses less digits than its factorization.

285317273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31912 (or 31895 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 285317273 is about 16891.3372176391. The cubic root of 285317273 is about 658.3285476267.

The spelling of 285317273 in words is "two hundred eighty-five million, three hundred seventeen thousand, two hundred seventy-three".