312212452217 has 2 divisors, whose sum is σ = 312212452218. Its totient is φ = 312212452216.

The previous prime is 312212452207. The next prime is 312212452259. The reversal of 312212452217 is 712254212213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175742054656 + 136470397561 = 419216^2 + 369419^2 .

It is a cyclic number.

It is not a de Polignac number, because 312212452217 - 2⁸ = 312212451961 is a prime.

It is not a weakly prime, because it can be changed into another prime (312212452207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156106226108 + 156106226109.

It is an arithmetic number, because the mean of its divisors is an integer number (156106226109).

Almost surely, 2^312212452217 is an apocalyptic number.

It is an amenable number.

312212452217 is a deficient number, since it is larger than the sum of its proper divisors (1).

312212452217 is an equidigital number, since it uses as much as digits as its factorization.

312212452217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The spelling of 312212452217 in words is "three hundred twelve billion, two hundred twelve million, four hundred fifty-two thousand, two hundred seventeen".