203420304223 has 2 divisors, whose sum is σ = 203420304224. Its totient is φ = 203420304222.

The previous prime is 203420304169. The next prime is 203420304239. The reversal of 203420304223 is 322403024302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203420304223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203420334223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101710152111 + 101710152112.

It is an arithmetic number, because the mean of its divisors is an integer number (101710152112).

Almost surely, 2^203420304223 is an apocalyptic number.

203420304223 is a deficient number, since it is larger than the sum of its proper divisors (1).

203420304223 is an equidigital number, since it uses as much as digits as its factorization.

203420304223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 203420304223 its reverse (322403024302), we get a palindrome (525823328525).

The spelling of 203420304223 in words is "two hundred three billion, four hundred twenty million, three hundred four thousand, two hundred twenty-three".