312998 has 16 divisors (see below), whose sum is σ = 545280. Its totient is φ = 131976.

The previous prime is 312989. The next prime is 313003. The reversal of 312998 is 899213.

312998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 965 + ... + 1247.

It is an arithmetic number, because the mean of its divisors is an integer number (34080).

2³¹²⁹⁹⁸ is an apocalyptic number.

312998 is a deficient number, since it is larger than the sum of its proper divisors (232282).

312998 is a wasteful number, since it uses less digits than its factorization.

312998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its digits is 3888, while the sum is 32.

The square root of 312998 is about 559.4622418001. The cubic root of 312998 is about 67.8964687493.

The spelling of 312998 in words is "three hundred twelve thousand, nine hundred ninety-eight".