312045912469 has 2 divisors, whose sum is σ = 312045912470. Its totient is φ = 312045912468.

The previous prime is 312045912467. The next prime is 312045912527. The reversal of 312045912469 is 964219540213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196896312900 + 115149599569 = 443730^2 + 339337^2 .

It is an emirp because it is prime and its reverse (964219540213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312045912469 - 2¹ = 312045912467 is a prime.

It is a super-3 number, since 3×312045912469³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 312045912467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312045912467) 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 as a sum of consecutive naturals, namely, 156022956234 + 156022956235.

It is an arithmetic number, because the mean of its divisors is an integer number (156022956235).

Almost surely, 2^312045912469 is an apocalyptic number.

It is an amenable number.

312045912469 is a deficient number, since it is larger than the sum of its proper divisors (1).

312045912469 is an equidigital number, since it uses as much as digits as its factorization.

312045912469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 312045912469 in words is "three hundred twelve billion, forty-five million, nine hundred twelve thousand, four hundred sixty-nine".