312485 has 4 divisors (see below), whose sum is σ = 374988. Its totient is φ = 249984.

The previous prime is 312469. The next prime is 312509. The reversal of 312485 is 584213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584213 = 7 ⋅83459.

It can be written as a sum of positive squares in 2 ways, for example, as 113569 + 198916 = 337^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 312485 - 2⁴ = 312469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312485.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312485.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31244 + ... + 31253.

It is an arithmetic number, because the mean of its divisors is an integer number (93747).

2³¹²⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

312485 is a deficient number, since it is larger than the sum of its proper divisors (62503).

312485 is an equidigital number, since it uses as much as digits as its factorization.

312485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62502.

The product of its digits is 960, while the sum is 23.

The square root of 312485 is about 559.0035778061. The cubic root of 312485 is about 67.8593546305.

Adding to 312485 its reverse (584213), we get a palindrome (896698).

It can be divided in two parts, 312 and 485, that added together give a palindrome (797).

The spelling of 312485 in words is "three hundred twelve thousand, four hundred eighty-five".