43212340481 has 2 divisors, whose sum is σ = 43212340482. Its totient is φ = 43212340480.

The previous prime is 43212340463. The next prime is 43212340517. The reversal of 43212340481 is 18404321234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31396650481 + 11815690000 = 177191^2 + 108700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43212340481 is a prime.

It is a super-2 number, since 2×43212340481² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43212340421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606170240 + 21606170241.

It is an arithmetic number, because the mean of its divisors is an integer number (21606170241).

Almost surely, 2^43212340481 is an apocalyptic number.

It is an amenable number.

43212340481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212340481 is an equidigital number, since it uses as much as digits as its factorization.

43212340481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 43212340481 in words is "forty-three billion, two hundred twelve million, three hundred forty thousand, four hundred eighty-one".