315147209 has 8 divisors (see below), whose sum is σ = 350337792. Its totient is φ = 281520720.

The previous prime is 315147193. The next prime is 315147211. The reversal of 315147209 is 902741513.

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

It is not a de Polignac number, because 315147209 - 2⁴ = 315147193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315147229) by changing a digit.

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, 390599 + ... + 391404.

It is an arithmetic number, because the mean of its divisors is an integer number (43792224).

Almost surely, 2^315147209 is an apocalyptic number.

It is an amenable number.

315147209 is a deficient number, since it is larger than the sum of its proper divisors (35190583).

315147209 is a wasteful number, since it uses less digits than its factorization.

315147209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782047.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 315147209 is about 17752.3860086468. The cubic root of 315147209 is about 680.5151870035.

The spelling of 315147209 in words is "three hundred fifteen million, one hundred forty-seven thousand, two hundred nine".