312994878 has 32 divisors (see below), whose sum is σ = 718433280. Its totient is φ = 89050080.

The previous prime is 312994867. The next prime is 312994889. The reversal of 312994878 is 878499213.

It is an interprime number because it is at equal distance from previous prime (312994867) and next prime (312994889).

It is a self number, because there is not a number n which added to its sum of digits gives 312994878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5553 + ... + 25628.

It is an arithmetic number, because the mean of its divisors is an integer number (22451040).

Almost surely, 2^312994878 is an apocalyptic number.

312994878 is an abundant number, since it is smaller than the sum of its proper divisors (405438402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312994878 is a wasteful number, since it uses less digits than its factorization.

312994878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31432.

The product of its digits is 870912, while the sum is 51.

The square root of 312994878 is about 17691.6612560833. The cubic root of 312994878 is about 678.9624300404.

The spelling of 312994878 in words is "three hundred twelve million, nine hundred ninety-four thousand, eight hundred seventy-eight".