315218065 has 8 divisors (see below), whose sum is σ = 378419328. Its totient is φ = 252069360.

The previous prime is 315218051. The next prime is 315218129. The reversal of 315218065 is 560812513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-315218065 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 25156.

It is an arithmetic number, because the mean of its divisors is an integer number (47302416).

Almost surely, 2^315218065 is an apocalyptic number.

It is an amenable number.

315218065 is a deficient number, since it is larger than the sum of its proper divisors (63201263).

315218065 is a wasteful number, since it uses less digits than its factorization.

315218065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26279.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 315218065 is about 17754.3815718825. The cubic root of 315218065 is about 680.5661843041.

The spelling of 315218065 in words is "three hundred fifteen million, two hundred eighteen thousand, sixty-five".