285980317 has 12 divisors (see below), whose sum is σ = 332947260. Its totient is φ = 244922496.

The previous prime is 285980311. The next prime is 285980323. The reversal of 285980317 is 713089582.

It is an interprime number because it is at equal distance from previous prime (285980311) and next prime (285980323).

It can be written as a sum of positive squares in 2 ways, for example, as 184796836 + 101183481 = 13594^2 + 10059^2 .

It is not a de Polignac number, because 285980317 - 2³ = 285980309 is a prime.

It is a super-2 number, since 2×285980317² = 163569483422840978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285980311) 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, 108309 + ... + 110917.

It is an arithmetic number, because the mean of its divisors is an integer number (27745605).

Almost surely, 2^285980317 is an apocalyptic number.

It is an amenable number.

285980317 is a deficient number, since it is larger than the sum of its proper divisors (46966943).

285980317 is a wasteful number, since it uses less digits than its factorization.

285980317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860 (or 4853 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 285980317 is about 16910.9525751804. The cubic root of 285980317 is about 658.8381126444.

The spelling of 285980317 in words is "two hundred eighty-five million, nine hundred eighty thousand, three hundred seventeen".