203242321 has 2 divisors, whose sum is σ = 203242322. Its totient is φ = 203242320.

The previous prime is 203242313. The next prime is 203242337. The reversal of 203242321 is 123242302.

203242321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173211921 + 30030400 = 13161^2 + 5480^2 .

It is a cyclic number.

It is not a de Polignac number, because 203242321 - 2³ = 203242313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203243321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101621160 + 101621161.

It is an arithmetic number, because the mean of its divisors is an integer number (101621161).

Almost surely, 2^203242321 is an apocalyptic number.

It is an amenable number.

203242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242321 is an equidigital number, since it uses as much as digits as its factorization.

203242321 is an evil number, because the sum of its binary digits is even.

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

The square root of 203242321 is about 14256.3081125514. The cubic root of 203242321 is about 587.9468238659.

Subtracting from 203242321 its sum of digits (19), we obtain a palindrome (203242302).

Adding to 203242321 its reverse (123242302), we get a palindrome (326484623).

The spelling of 203242321 in words is "two hundred three million, two hundred forty-two thousand, three hundred twenty-one".