212131431443 has 2 divisors, whose sum is σ = 212131431444. Its totient is φ = 212131431442.

The previous prime is 212131431427. The next prime is 212131431527. The reversal of 212131431443 is 344134131212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212131431443 - 2⁴ = 212131431427 is a prime.

It is not a weakly prime, because it can be changed into another prime (212131431643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106065715721 + 106065715722.

It is an arithmetic number, because the mean of its divisors is an integer number (106065715722).

Almost surely, 2^212131431443 is an apocalyptic number.

212131431443 is a deficient number, since it is larger than the sum of its proper divisors (1).

212131431443 is an equidigital number, since it uses as much as digits as its factorization.

212131431443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

Adding to 212131431443 its reverse (344134131212), we get a palindrome (556265562655).

The spelling of 212131431443 in words is "two hundred twelve billion, one hundred thirty-one million, four hundred thirty-one thousand, four hundred forty-three".