212320343 has 2 divisors, whose sum is σ = 212320344. Its totient is φ = 212320342.

The previous prime is 212320331. The next prime is 212320357. The reversal of 212320343 is 343023212.

212320343 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212320343 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212320373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160171 + 106160172.

It is an arithmetic number, because the mean of its divisors is an integer number (106160172).

Almost surely, 2^212320343 is an apocalyptic number.

212320343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320343 is an equidigital number, since it uses as much as digits as its factorization.

212320343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 212320343 is about 14571.2162498537. The cubic root of 212320343 is about 596.5733778740.

Adding to 212320343 its reverse (343023212), we get a palindrome (555343555).

The spelling of 212320343 in words is "two hundred twelve million, three hundred twenty thousand, three hundred forty-three".