312215262643 has 2 divisors, whose sum is σ = 312215262644. Its totient is φ = 312215262642.

The previous prime is 312215262641. The next prime is 312215262649. The reversal of 312215262643 is 346262512213.

It is a weak prime.

It is an emirp because it is prime and its reverse (346262512213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312215262643 - 2¹ = 312215262641 is a prime.

Together with 312215262641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312215262641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156107631321 + 156107631322.

It is an arithmetic number, because the mean of its divisors is an integer number (156107631322).

Almost surely, 2^312215262643 is an apocalyptic number.

312215262643 is a deficient number, since it is larger than the sum of its proper divisors (1).

312215262643 is an equidigital number, since it uses as much as digits as its factorization.

312215262643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

Adding to 312215262643 its reverse (346262512213), we get a palindrome (658477774856).

The spelling of 312215262643 in words is "three hundred twelve billion, two hundred fifteen million, two hundred sixty-two thousand, six hundred forty-three".