318972 has 24 divisors (see below), whose sum is σ = 784000. Its totient is φ = 100656.

The previous prime is 318949. The next prime is 318979. The reversal of 318972 is 279813.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318979) by changing a digit.

318972 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472 + ... + 927.

2³¹⁸⁹⁷² is an apocalyptic number.

It is an amenable number.

318972 is an abundant number, since it is smaller than the sum of its proper divisors (465028).

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

318972 is a wasteful number, since it uses less digits than its factorization.

318972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1423 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 318972 is about 564.7760618157. The cubic root of 318972 is about 68.3257153250.

The spelling of 318972 in words is "three hundred eighteen thousand, nine hundred seventy-two".