203342440321 has 2 divisors, whose sum is σ = 203342440322. Its totient is φ = 203342440320.

The previous prime is 203342440307. The next prime is 203342440331. The reversal of 203342440321 is 123044243302.

203342440321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190588126096 + 12754314225 = 436564^2 + 112935^2 .

It is a cyclic number.

It is not a de Polignac number, because 203342440321 - 2⁷ = 203342440193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203342440321.

It is not a weakly prime, because it can be changed into another prime (203342440331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101671220160 + 101671220161.

It is an arithmetic number, because the mean of its divisors is an integer number (101671220161).

Almost surely, 2^203342440321 is an apocalyptic number.

It is an amenable number.

203342440321 is a deficient number, since it is larger than the sum of its proper divisors (1).

203342440321 is an equidigital number, since it uses as much as digits as its factorization.

203342440321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 203342440321 its reverse (123044243302), we get a palindrome (326386683623).

The spelling of 203342440321 in words is "two hundred three billion, three hundred forty-two million, four hundred forty thousand, three hundred twenty-one".