312718 has 12 divisors (see below), whose sum is σ = 545832. Its totient is φ = 133980.

The previous prime is 312709. The next prime is 312727. The reversal of 312718 is 817213.

It is an interprime number because it is at equal distance from previous prime (312709) and next prime (312727).

It is a congruent number.

It is an unprimeable number.

312718 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1498 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (45486).

2³¹²⁷¹⁸ is an apocalyptic number.

312718 is a deficient number, since it is larger than the sum of its proper divisors (233114).

312718 is a wasteful number, since it uses less digits than its factorization.

312718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207 (or 3200 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 312718 is about 559.2119455090. The cubic root of 312718 is about 67.8762165614.

It can be divided in two parts, 3 and 12718, that added together give a palindrome (12721).

The spelling of 312718 in words is "three hundred twelve thousand, seven hundred eighteen".