2321317587 has 4 divisors (see below), whose sum is σ = 3095090120. Its totient is φ = 1547545056.

The previous prime is 2321317553. The next prime is 2321317589. The reversal of 2321317587 is 7857131232.

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

It is a de Polignac number, because none of the positive numbers 2^k-2321317587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321317589) 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, 386886262 + ... + 386886267.

It is an arithmetic number, because the mean of its divisors is an integer number (773772530).

Almost surely, 2^2321317587 is an apocalyptic number.

2321317587 is a deficient number, since it is larger than the sum of its proper divisors (773772533).

2321317587 is an equidigital number, since it uses as much as digits as its factorization.

2321317587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773772532.

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

The square root of 2321317587 is about 48180.0538293597. The cubic root of 2321317587 is about 1324.0717527507.

The spelling of 2321317587 in words is "two billion, three hundred twenty-one million, three hundred seventeen thousand, five hundred eighty-seven".