285134317 has 8 divisors (see below), whose sum is σ = 307229720. Its totient is φ = 263062080.

The previous prime is 285134309. The next prime is 285134363. The reversal of 285134317 is 713431582.

It can be written as a sum of positive squares in 4 ways, for example, as 4605316 + 280529001 = 2146^2 + 16749^2 .

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 285134317 - 2³ = 285134309 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 (285134917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26467 + ... + 35647.

It is an arithmetic number, because the mean of its divisors is an integer number (38403715).

Almost surely, 2^285134317 is an apocalyptic number.

It is an amenable number.

285134317 is a deficient number, since it is larger than the sum of its proper divisors (22095403).

285134317 is a wasteful number, since it uses less digits than its factorization.

285134317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11583.

The product of its digits is 20160, while the sum is 34.

The square root of 285134317 is about 16885.9206737447. The cubic root of 285134317 is about 658.1878026585.

Adding to 285134317 its reverse (713431582), we get a palindrome (998565899).

The spelling of 285134317 in words is "two hundred eighty-five million, one hundred thirty-four thousand, three hundred seventeen".