212431264247 has 2 divisors, whose sum is σ = 212431264248. Its totient is φ = 212431264246.

The previous prime is 212431264147. The next prime is 212431264271. The reversal of 212431264247 is 742462134212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212431264247 - 2⁸ = 212431263991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212431264247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212431264147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106215632123 + 106215632124.

It is an arithmetic number, because the mean of its divisors is an integer number (106215632124).

Almost surely, 2^212431264247 is an apocalyptic number.

212431264247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212431264247 is an equidigital number, since it uses as much as digits as its factorization.

212431264247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 38.

Adding to 212431264247 its reverse (742462134212), we get a palindrome (954893398459).

The spelling of 212431264247 in words is "two hundred twelve billion, four hundred thirty-one million, two hundred sixty-four thousand, two hundred forty-seven".