312403974912277 has 2 divisors, whose sum is σ = 312403974912278. Its totient is φ = 312403974912276.

The previous prime is 312403974912221. The next prime is 312403974912299. The reversal of 312403974912277 is 772219479304213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272975195285521 + 39428779626756 = 16521961^2 + 6279234^2 .

It is a cyclic number.

It is not a de Polignac number, because 312403974912277 - 2⁴³ = 303607881890069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312403974919277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156201987456138 + 156201987456139.

It is an arithmetic number, because the mean of its divisors is an integer number (156201987456139).

Almost surely, 2^{312403974912277} is an apocalyptic number.

It is an amenable number.

312403974912277 is a deficient number, since it is larger than the sum of its proper divisors (1).

312403974912277 is an equidigital number, since it uses as much as digits as its factorization.

312403974912277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 312403974912277 in words is "three hundred twelve trillion, four hundred three billion, nine hundred seventy-four million, nine hundred twelve thousand, two hundred seventy-seven".