212433503 has 2 divisors, whose sum is σ = 212433504. Its totient is φ = 212433502.

The previous prime is 212433469. The next prime is 212433511. The reversal of 212433503 is 305334212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212433503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212433103) 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, 106216751 + 106216752.

It is an arithmetic number, because the mean of its divisors is an integer number (106216752).

Almost surely, 2^212433503 is an apocalyptic number.

212433503 is a deficient number, since it is larger than the sum of its proper divisors (1).

212433503 is an equidigital number, since it uses as much as digits as its factorization.

212433503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 212433503 is about 14575.0987303689. The cubic root of 212433503 is about 596.6793439389.

Adding to 212433503 its reverse (305334212), we get a palindrome (517767715).

The spelling of 212433503 in words is "two hundred twelve million, four hundred thirty-three thousand, five hundred three".