312211343112247 has 2 divisors, whose sum is σ = 312211343112248. Its totient is φ = 312211343112246.

The previous prime is 312211343112157. The next prime is 312211343112311. The reversal of 312211343112247 is 742211343112213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312211343112247 - 2¹⁹ = 312211342587959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312211343112047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156105671556123 + 156105671556124.

It is an arithmetic number, because the mean of its divisors is an integer number (156105671556124).

Almost surely, 2^{312211343112247} is an apocalyptic number.

312211343112247 is a deficient number, since it is larger than the sum of its proper divisors (1).

312211343112247 is an equidigital number, since it uses as much as digits as its factorization.

312211343112247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The spelling of 312211343112247 in words is "three hundred twelve trillion, two hundred eleven billion, three hundred forty-three million, one hundred twelve thousand, two hundred forty-seven".