312806 has 16 divisors (see below), whose sum is σ = 517104. Its totient is φ = 141024.

The previous prime is 312799. The next prime is 312839. The reversal of 312806 is 608213.

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 312806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (32319).

2³¹²⁸⁰⁶ is an apocalyptic number.

312806 is a deficient number, since it is larger than the sum of its proper divisors (204298).

312806 is a wasteful number, since it uses less digits than its factorization.

312806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 312806 is about 559.2906221277. The cubic root of 312806 is about 67.8825828369.

The spelling of 312806 in words is "three hundred twelve thousand, eight hundred six".