303242143121 has 2 divisors, whose sum is σ = 303242143122. Its totient is φ = 303242143120.

The previous prime is 303242143103. The next prime is 303242143123. The reversal of 303242143121 is 121341242303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237816176896 + 65425966225 = 487664^2 + 255785^2 .

It is a cyclic number.

It is not a de Polignac number, because 303242143121 - 2¹⁰ = 303242142097 is a prime.

Together with 303242143123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (303242143123) 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, 151621071560 + 151621071561.

It is an arithmetic number, because the mean of its divisors is an integer number (151621071561).

Almost surely, 2^303242143121 is an apocalyptic number.

It is an amenable number.

303242143121 is a deficient number, since it is larger than the sum of its proper divisors (1).

303242143121 is an equidigital number, since it uses as much as digits as its factorization.

303242143121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 303242143121 its reverse (121341242303), we get a palindrome (424583385424).

The spelling of 303242143121 in words is "three hundred three billion, two hundred forty-two million, one hundred forty-three thousand, one hundred twenty-one".