203034421 has 2 divisors, whose sum is σ = 203034422. Its totient is φ = 203034420.

The previous prime is 203034401. The next prime is 203034463. The reversal of 203034421 is 124430302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168636196 + 34398225 = 12986^2 + 5865^2 .

It is a cyclic number.

It is not a de Polignac number, because 203034421 - 2¹¹ = 203032373 is a prime.

It is a super-2 number, since 2×203034421² = 82445952221610482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203034401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101517210 + 101517211.

It is an arithmetic number, because the mean of its divisors is an integer number (101517211).

Almost surely, 2^203034421 is an apocalyptic number.

It is an amenable number.

203034421 is a deficient number, since it is larger than the sum of its proper divisors (1).

203034421 is an equidigital number, since it uses as much as digits as its factorization.

203034421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 203034421 is about 14249.0147378687. The cubic root of 203034421 is about 587.7462818951.

Adding to 203034421 its reverse (124430302), we get a palindrome (327464723).

The spelling of 203034421 in words is "two hundred three million, thirty-four thousand, four hundred twenty-one".