318945 has 16 divisors (see below), whose sum is σ = 556992. Its totient is φ = 154560.

The previous prime is 318919. The next prime is 318949. The reversal of 318945 is 549813.

It is not a de Polignac number, because 318945 - 2⁶ = 318881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318949) 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 15 ways as a sum of consecutive naturals, for example, 802 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (34812).

2³¹⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

318945 is a deficient number, since it is larger than the sum of its proper divisors (238047).

318945 is a wasteful number, since it uses less digits than its factorization.

318945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its digits is 4320, while the sum is 30.

The square root of 318945 is about 564.7521580304. The cubic root of 318945 is about 68.3237874166.

The spelling of 318945 in words is "three hundred eighteen thousand, nine hundred forty-five".