312916718689 has 4 divisors (see below), whose sum is σ = 317203249156. Its totient is φ = 308630188224.

The previous prime is 312916718603. The next prime is 312916718693. The reversal of 312916718689 is 986817619213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 231924112225 + 80992606464 = 481585^2 + 284592^2 .

It is a cyclic number.

It is not a de Polignac number, because 312916718689 - 2¹¹ = 312916716641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312916716689) 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 3 ways as a sum of consecutive naturals, for example, 2143265124 + ... + 2143265269.

It is an arithmetic number, because the mean of its divisors is an integer number (79300812289).

Almost surely, 2^312916718689 is an apocalyptic number.

It is an amenable number.

312916718689 is a deficient number, since it is larger than the sum of its proper divisors (4286530467).

312916718689 is an equidigital number, since it uses as much as digits as its factorization.

312916718689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286530466.

The product of its digits is 7838208, while the sum is 61.

The spelling of 312916718689 in words is "three hundred twelve billion, nine hundred sixteen million, seven hundred eighteen thousand, six hundred eighty-nine".