318622 has 4 divisors (see below), whose sum is σ = 477936. Its totient is φ = 159310.

The previous prime is 318601. The next prime is 318629. The reversal of 318622 is 226813.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 318593 and 318602.

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 318622.

It is not an unprimeable number, because it can be changed into a prime (318629) by changing a digit.

318622 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 as a sum of consecutive naturals, namely, 79654 + ... + 79657.

It is an arithmetic number, because the mean of its divisors is an integer number (119484).

2³¹⁸⁶²² is an apocalyptic number.

318622 is a deficient number, since it is larger than the sum of its proper divisors (159314).

318622 is a wasteful number, since it uses less digits than its factorization.

318622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159313.

The product of its digits is 576, while the sum is 22.

The square root of 318622 is about 564.4661194439. The cubic root of 318622 is about 68.3007154792.

Subtracting from 318622 its reverse (226813), we obtain a square (91809 = 303²).

The spelling of 318622 in words is "three hundred eighteen thousand, six hundred twenty-two".