212315603 has 2 divisors, whose sum is σ = 212315604. Its totient is φ = 212315602.

The previous prime is 212315573. The next prime is 212315611. The reversal of 212315603 is 306513212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212315603 - 2⁶ = 212315539 is a prime.

It is not a weakly prime, because it can be changed into another prime (212315303) 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, 106157801 + 106157802.

It is an arithmetic number, because the mean of its divisors is an integer number (106157802).

Almost surely, 2^212315603 is an apocalyptic number.

212315603 is a deficient number, since it is larger than the sum of its proper divisors (1).

212315603 is an equidigital number, since it uses as much as digits as its factorization.

212315603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 212315603 is about 14571.0535995171. The cubic root of 212315603 is about 596.5689383892.

Adding to 212315603 its reverse (306513212), we get a palindrome (518828815).

The spelling of 212315603 in words is "two hundred twelve million, three hundred fifteen thousand, six hundred three".