318342 has 16 divisors (see below), whose sum is σ = 674352. Its totient is φ = 99840.

The previous prime is 318337. The next prime is 318347. The reversal of 318342 is 243813.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (318337) and next prime (318347).

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 318342.

It is not an unprimeable number, because it can be changed into a prime (318347) by changing a digit.

318342 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 7 ways as a sum of consecutive naturals, for example, 1459 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (42147).

2³¹⁸³⁴² is an apocalyptic number.

318342 is an abundant number, since it is smaller than the sum of its proper divisors (356010).

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

318342 is a wasteful number, since it uses less digits than its factorization.

318342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its digits is 576, while the sum is 21.

The square root of 318342 is about 564.2180429586. The cubic root of 318342 is about 68.2807024176.

Subtracting from 318342 its reverse (243813), we obtain a square (74529 = 273²).

The spelling of 318342 in words is "three hundred eighteen thousand, three hundred forty-two".