319285 has 4 divisors (see below), whose sum is σ = 383148. Its totient is φ = 255424.

The previous prime is 319279. The next prime is 319289. The reversal of 319285 is 582913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164836 + 154449 = 406^2 + 393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319285 is a prime.

It is a super-2 number, since 2×319285² = 203885822450, 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 (319289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31924 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (95787).

2³¹⁹²⁸⁵ is an apocalyptic number.

It is an amenable number.

319285 is a deficient number, since it is larger than the sum of its proper divisors (63863).

319285 is an equidigital number, since it uses as much as digits as its factorization.

319285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63862.

The product of its digits is 2160, while the sum is 28.

The square root of 319285 is about 565.0530948504. The cubic root of 319285 is about 68.3480568445.

It can be divided in two parts, 31 and 9285, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 319285 in words is "three hundred nineteen thousand, two hundred eighty-five".