12312687587 has 4 divisors (see below), whose sum is σ = 12317697240. Its totient is φ = 12307677936.

The previous prime is 12312687551. The next prime is 12312687623. The reversal of 12312687587 is 78578621321.

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

It is an interprime number because it is at equal distance from previous prime (12312687551) and next prime (12312687623).

It is a cyclic number.

It is not a de Polignac number, because 12312687587 - 2⁶ = 12312687523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312687487) 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, 2501138 + ... + 2506055.

It is an arithmetic number, because the mean of its divisors is an integer number (3079424310).

Almost surely, 2^12312687587 is an apocalyptic number.

12312687587 is a deficient number, since it is larger than the sum of its proper divisors (5009653).

12312687587 is an equidigital number, since it uses as much as digits as its factorization.

12312687587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009652.

The product of its digits is 1128960, while the sum is 50.

The spelling of 12312687587 in words is "twelve billion, three hundred twelve million, six hundred eighty-seven thousand, five hundred eighty-seven".