318401316 has 72 divisors (see below), whose sum is σ = 863291520. Its totient is φ = 98639424.

The previous prime is 318401309. The next prime is 318401431. The reversal of 318401316 is 613104813.

It is a self number, because there is not a number n which added to its sum of digits gives 318401316.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31861 + ... + 40643.

It is an arithmetic number, because the mean of its divisors is an integer number (11990160).

Almost surely, 2^318401316 is an apocalyptic number.

318401316 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318401316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431645760).

318401316 is an abundant number, since it is smaller than the sum of its proper divisors (544890204).

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

318401316 is a wasteful number, since it uses less digits than its factorization.

318401316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 318401316 is about 17843.8032941411. The cubic root of 318401316 is about 682.8494302116.

The spelling of 318401316 in words is "three hundred eighteen million, four hundred one thousand, three hundred sixteen".