203420207 has 2 divisors, whose sum is σ = 203420208. Its totient is φ = 203420206.

The previous prime is 203420167. The next prime is 203420209. The reversal of 203420207 is 702024302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203420207 - 2¹² = 203416111 is a prime.

Together with 203420209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203420209) 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, 101710103 + 101710104.

It is an arithmetic number, because the mean of its divisors is an integer number (101710104).

Almost surely, 2^203420207 is an apocalyptic number.

203420207 is a deficient number, since it is larger than the sum of its proper divisors (1).

203420207 is an equidigital number, since it uses as much as digits as its factorization.

203420207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 203420207 is about 14262.5456002777. The cubic root of 203420207 is about 588.1183055566.

Adding to 203420207 its reverse (702024302), we get a palindrome (905444509).

The spelling of 203420207 in words is "two hundred three million, four hundred twenty thousand, two hundred seven".