312798 has 16 divisors (see below), whose sum is σ = 642960. Its totient is φ = 101376.

The previous prime is 312779. The next prime is 312799. The reversal of 312798 is 897213.

It is a happy number.

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 312798.

It is not an unprimeable number, because it can be changed into a prime (312799) by changing a digit.

312798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 483 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (40185).

2³¹²⁷⁹⁸ is an apocalyptic number.

312798 is an abundant number, since it is smaller than the sum of its proper divisors (330162).

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

312798 is a wasteful number, since it uses less digits than its factorization.

312798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its digits is 3024, while the sum is 30.

The square root of 312798 is about 559.2834701652. The cubic root of 312798 is about 67.8820041339.

The spelling of 312798 in words is "three hundred twelve thousand, seven hundred ninety-eight".