43212340541 has 2 divisors, whose sum is σ = 43212340542. Its totient is φ = 43212340540.

The previous prime is 43212340529. The next prime is 43212340543. The reversal of 43212340541 is 14504321234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26833716100 + 16378624441 = 163810^2 + 127979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43212340541 is a prime.

Together with 43212340543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43212340543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606170270 + 21606170271.

It is an arithmetic number, because the mean of its divisors is an integer number (21606170271).

Almost surely, 2^43212340541 is an apocalyptic number.

It is an amenable number.

43212340541 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212340541 is an equidigital number, since it uses as much as digits as its factorization.

43212340541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 43212340541 its reverse (14504321234), we get a palindrome (57716661775).

The spelling of 43212340541 in words is "forty-three billion, two hundred twelve million, three hundred forty thousand, five hundred forty-one".