342318 has 16 divisors (see below), whose sum is σ = 696960. Its totient is φ = 112056.

The previous prime is 342299. The next prime is 342319. The reversal of 342318 is 813243.

It is a happy number.

It is a super-2 number, since 2×342318² = 234363226248, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 342294 and 342303.

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 342318.

It is not an unprimeable number, because it can be changed into a prime (342319) by changing a digit.

342318 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, 130 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (43560).

2³⁴²³¹⁸ is an apocalyptic number.

342318 is an abundant number, since it is smaller than the sum of its proper divisors (354642).

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

342318 is a wasteful number, since it uses less digits than its factorization.

342318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

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

The square root of 342318 is about 585.0794817800. The cubic root of 342318 is about 69.9535746588.

The spelling of 342318 in words is "three hundred forty-two thousand, three hundred eighteen".