315387216 has 80 divisors (see below), whose sum is σ = 912352320. Its totient is φ = 104307840.

The previous prime is 315387199. The next prime is 315387221. The reversal of 315387216 is 612783513.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 53806 + ... + 59378.

It is an arithmetic number, because the mean of its divisors is an integer number (11404404).

Almost surely, 2^315387216 is an apocalyptic number.

315387216 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 315387216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456176160).

315387216 is an abundant number, since it is smaller than the sum of its proper divisors (596965104).

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

315387216 is a wasteful number, since it uses less digits than its factorization.

315387216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5709 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 315387216 is about 17759.1445739934. The cubic root of 315387216 is about 680.6878967291.

The spelling of 315387216 in words is "three hundred fifteen million, three hundred eighty-seven thousand, two hundred sixteen".