312394 has 8 divisors (see below), whose sum is σ = 473220. Its totient is φ = 154656.

The previous prime is 312383. The next prime is 312397. The reversal of 312394 is 493213.

It can be written as a sum of positive squares in 2 ways, for example, as 288369 + 24025 = 537^2 + 155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×312394² = 195180022472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499 + ... + 934.

2³¹²³⁹⁴ is an apocalyptic number.

312394 is a deficient number, since it is larger than the sum of its proper divisors (160826).

312394 is a wasteful number, since it uses less digits than its factorization.

312394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544.

The product of its digits is 648, while the sum is 22.

The square root of 312394 is about 558.9221770515. The cubic root of 312394 is about 67.8527667934.

The spelling of 312394 in words is "three hundred twelve thousand, three hundred ninety-four".