315897216 has 48 divisors (see below), whose sum is σ = 840028140. Its totient is φ = 105182976.

The previous prime is 315897209. The next prime is 315897217. The reversal of 315897216 is 612798513.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315897217) 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 5 ways as a sum of consecutive naturals, for example, 347835 + ... + 348741.

Almost surely, 2^315897216 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 315897216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420014070).

315897216 is an abundant number, since it is smaller than the sum of its proper divisors (524130924).

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

315897216 is an frugal number, since it uses more digits than its factorization.

315897216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 912 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 315897216 is about 17773.4975736347. The cubic root of 315897216 is about 681.0546034908.

The spelling of 315897216 in words is "three hundred fifteen million, eight hundred ninety-seven thousand, two hundred sixteen".