312299 has 4 divisors (see below), whose sum is σ = 336336. Its totient is φ = 288264.

The previous prime is 312289. The next prime is 312311. The reversal of 312299 is 992213.

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

It is a cyclic number.

It is not a de Polignac number, because 312299 - 2⁴ = 312283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11999 + ... + 12024.

It is an arithmetic number, because the mean of its divisors is an integer number (84084).

2³¹²²⁹⁹ is an apocalyptic number.

312299 is a deficient number, since it is larger than the sum of its proper divisors (24037).

312299 is a wasteful number, since it uses less digits than its factorization.

312299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24036.

The product of its digits is 972, while the sum is 26.

The square root of 312299 is about 558.8371855917. The cubic root of 312299 is about 67.8458880160.

The spelling of 312299 in words is "three hundred twelve thousand, two hundred ninety-nine".