212315573 has 2 divisors, whose sum is σ = 212315574. Its totient is φ = 212315572.

The previous prime is 212315569. The next prime is 212315603. The reversal of 212315573 is 375513212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172081924 + 40233649 = 13118^2 + 6343^2 .

It is a cyclic number.

It is not a de Polignac number, because 212315573 - 2² = 212315569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212315273) 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, 106157786 + 106157787.

It is an arithmetic number, because the mean of its divisors is an integer number (106157787).

Almost surely, 2^212315573 is an apocalyptic number.

It is an amenable number.

212315573 is a deficient number, since it is larger than the sum of its proper divisors (1).

212315573 is an equidigital number, since it uses as much as digits as its factorization.

212315573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 212315573 is about 14571.0525700788. The cubic root of 212315573 is about 596.5689102909.

Adding to 212315573 its reverse (375513212), we get a palindrome (587828785).

The spelling of 212315573 in words is "two hundred twelve million, three hundred fifteen thousand, five hundred seventy-three".