312085 has 4 divisors (see below), whose sum is σ = 374508. Its totient is φ = 249664.

The previous prime is 312083. The next prime is 312089. The reversal of 312085 is 580213.

It is a happy number.

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 39601 + 272484 = 199^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 312085 - 2¹ = 312083 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 (312083) 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, 31204 + ... + 31213.

It is an arithmetic number, because the mean of its divisors is an integer number (93627).

2³¹²⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

312085 is a deficient number, since it is larger than the sum of its proper divisors (62423).

312085 is an equidigital number, since it uses as much as digits as its factorization.

312085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62422.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 312085 is about 558.6456837746. The cubic root of 312085 is about 67.8303875526.

Adding to 312085 its reverse (580213), we get a palindrome (892298).

It can be divided in two parts, 31208 and 5, that added together give a palindrome (31213).

The spelling of 312085 in words is "three hundred twelve thousand, eighty-five".