315317487 has 4 divisors (see below), whose sum is σ = 420423320. Its totient is φ = 210211656.

The previous prime is 315317467. The next prime is 315317503. The reversal of 315317487 is 784713513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315317487 - 2⁶ = 315317423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315317447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52552912 + ... + 52552917.

It is an arithmetic number, because the mean of its divisors is an integer number (105105830).

Almost surely, 2^315317487 is an apocalyptic number.

315317487 is a deficient number, since it is larger than the sum of its proper divisors (105105833).

315317487 is a wasteful number, since it uses less digits than its factorization.

315317487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105105832.

The product of its digits is 70560, while the sum is 39.

The square root of 315317487 is about 17757.1812796964. The cubic root of 315317487 is about 680.6377285736.

The spelling of 315317487 in words is "three hundred fifteen million, three hundred seventeen thousand, four hundred eighty-seven".