318504312 has 160 divisors (see below), whose sum is σ = 1041084000. Its totient is φ = 90937728.

The previous prime is 318504271. The next prime is 318504341. The reversal of 318504312 is 213405813.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221548 + ... + 222980.

It is an arithmetic number, because the mean of its divisors is an integer number (6506775).

Almost surely, 2^318504312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318504312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520542000).

318504312 is an abundant number, since it is smaller than the sum of its proper divisors (722579688).

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

318504312 is a wasteful number, since it uses less digits than its factorization.

318504312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 318504312 is about 17846.6891047051. The cubic root of 318504312 is about 682.9230513246.

The spelling of 318504312 in words is "three hundred eighteen million, five hundred four thousand, three hundred twelve".