210212431813 has 2 divisors, whose sum is σ = 210212431814. Its totient is φ = 210212431812.

The previous prime is 210212431811. The next prime is 210212431837. The reversal of 210212431813 is 318134212012.

210212431813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138876966244 + 71335465569 = 372662^2 + 267087^2 .

It is a cyclic number.

It is not a de Polignac number, because 210212431813 - 2¹ = 210212431811 is a prime.

Together with 210212431811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210212431811) 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, 105106215906 + 105106215907.

It is an arithmetic number, because the mean of its divisors is an integer number (105106215907).

Almost surely, 2^210212431813 is an apocalyptic number.

It is an amenable number.

210212431813 is a deficient number, since it is larger than the sum of its proper divisors (1).

210212431813 is an equidigital number, since it uses as much as digits as its factorization.

210212431813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 210212431813 its reverse (318134212012), we get a palindrome (528346643825).

The spelling of 210212431813 in words is "two hundred ten billion, two hundred twelve million, four hundred thirty-one thousand, eight hundred thirteen".