318406 has 16 divisors (see below), whose sum is σ = 535248. Its totient is φ = 140800.

The previous prime is 318403. The next prime is 318407. The reversal of 318406 is 604813.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318403) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (33453).

2³¹⁸⁴⁰⁶ is an apocalyptic number.

318406 is a deficient number, since it is larger than the sum of its proper divisors (216842).

318406 is a wasteful number, since it uses less digits than its factorization.

318406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

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

The square root of 318406 is about 564.2747557706. The cubic root of 318406 is about 68.2852778660.

The spelling of 318406 in words is "three hundred eighteen thousand, four hundred six".