212434361 has 2 divisors, whose sum is σ = 212434362. Its totient is φ = 212434360.

The previous prime is 212434349. The next prime is 212434379. The reversal of 212434361 is 163434212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143544361 + 68890000 = 11981^2 + 8300^2 .

It is a cyclic number.

It is not a de Polignac number, because 212434361 - 2¹⁰ = 212433337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212434361.

It is not a weakly prime, because it can be changed into another prime (212434331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106217180 + 106217181.

It is an arithmetic number, because the mean of its divisors is an integer number (106217181).

Almost surely, 2^212434361 is an apocalyptic number.

It is an amenable number.

212434361 is a deficient number, since it is larger than the sum of its proper divisors (1).

212434361 is an equidigital number, since it uses as much as digits as its factorization.

212434361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 212434361 is about 14575.1281641020. The cubic root of 212434361 is about 596.6801472494.

Adding to 212434361 its reverse (163434212), we get a palindrome (375868573).

The spelling of 212434361 in words is "two hundred twelve million, four hundred thirty-four thousand, three hundred sixty-one".