312045521515019 has 2 divisors, whose sum is σ = 312045521515020. Its totient is φ = 312045521515018.

The previous prime is 312045521514989. The next prime is 312045521515051. The reversal of 312045521515019 is 910515125540213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312045521515019 - 2¹⁶ = 312045521449483 is a prime.

It is a super-2 number, since 2×312045521515019² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312045521515069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156022760757509 + 156022760757510.

It is an arithmetic number, because the mean of its divisors is an integer number (156022760757510).

Almost surely, 2^{312045521515019} is an apocalyptic number.

312045521515019 is a deficient number, since it is larger than the sum of its proper divisors (1).

312045521515019 is an equidigital number, since it uses as much as digits as its factorization.

312045521515019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270000, while the sum is 44.

The spelling of 312045521515019 in words is "three hundred twelve trillion, forty-five billion, five hundred twenty-one million, five hundred fifteen thousand, nineteen".