918312 has 32 divisors (see below), whose sum is σ = 2328480. Its totient is φ = 301760.

The previous prime is 918301. The next prime is 918319. The reversal of 918312 is 213819.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (918319) by changing a digit.

918312 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (72765).

2⁹¹⁸³¹² is an apocalyptic number.

It is an amenable number.

918312 is an abundant number, since it is smaller than the sum of its proper divisors (1410168).

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

918312 is a wasteful number, since it uses less digits than its factorization.

918312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 549 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 918312 is about 958.2859698441. The cubic root of 918312 is about 97.1993632365.

The spelling of 918312 in words is "nine hundred eighteen thousand, three hundred twelve".