212631203 has 2 divisors, whose sum is σ = 212631204. Its totient is φ = 212631202.

The previous prime is 212631197. The next prime is 212631217. The reversal of 212631203 is 302136212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212631203 is a prime.

It is not a weakly prime, because it can be changed into another prime (212631233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106315601 + 106315602.

It is an arithmetic number, because the mean of its divisors is an integer number (106315602).

Almost surely, 2^212631203 is an apocalyptic number.

212631203 is a deficient number, since it is larger than the sum of its proper divisors (1).

212631203 is an equidigital number, since it uses as much as digits as its factorization.

212631203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 212631203 is about 14581.8792684619. The cubic root of 212631203 is about 596.8643852648.

Adding to 212631203 its reverse (302136212), we get a palindrome (514767415).

The spelling of 212631203 in words is "two hundred twelve million, six hundred thirty-one thousand, two hundred three".