312100319987 has 2 divisors, whose sum is σ = 312100319988. Its totient is φ = 312100319986.

The previous prime is 312100319983. The next prime is 312100320061. The reversal of 312100319987 is 789913001213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312100319987 - 2² = 312100319983 is a prime.

It is not a weakly prime, because it can be changed into another prime (312100319983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156050159993 + 156050159994.

It is an arithmetic number, because the mean of its divisors is an integer number (156050159994).

Almost surely, 2^312100319987 is an apocalyptic number.

312100319987 is a deficient number, since it is larger than the sum of its proper divisors (1).

312100319987 is an equidigital number, since it uses as much as digits as its factorization.

312100319987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 312100319987 in words is "three hundred twelve billion, one hundred million, three hundred nineteen thousand, nine hundred eighty-seven".