2317213887 has 16 divisors (see below), whose sum is σ = 3120749280. Its totient is φ = 1529269632.

The previous prime is 2317213853. The next prime is 2317213889. The reversal of 2317213887 is 7883127132.

It is a de Polignac number, because none of the positive numbers 2^k-2317213887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317213889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472693 + ... + 477569.

It is an arithmetic number, because the mean of its divisors is an integer number (195046830).

Almost surely, 2^2317213887 is an apocalyptic number.

2317213887 is a deficient number, since it is larger than the sum of its proper divisors (803535393).

2317213887 is a wasteful number, since it uses less digits than its factorization.

2317213887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442.

The product of its digits is 112896, while the sum is 42.

The square root of 2317213887 is about 48137.4478654613. The cubic root of 2317213887 is about 1323.2910469533.

The spelling of 2317213887 in words is "two billion, three hundred seventeen million, two hundred thirteen thousand, eight hundred eighty-seven".