212385317843 has 2 divisors, whose sum is σ = 212385317844. Its totient is φ = 212385317842.

The previous prime is 212385317689. The next prime is 212385317863. The reversal of 212385317843 is 348713583212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212385317843 is a prime.

It is not a weakly prime, because it can be changed into another prime (212385317863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106192658921 + 106192658922.

It is an arithmetic number, because the mean of its divisors is an integer number (106192658922).

Almost surely, 2^212385317843 is an apocalyptic number.

212385317843 is a deficient number, since it is larger than the sum of its proper divisors (1).

212385317843 is an equidigital number, since it uses as much as digits as its factorization.

212385317843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The spelling of 212385317843 in words is "two hundred twelve billion, three hundred eighty-five million, three hundred seventeen thousand, eight hundred forty-three".