303242239981 has 2 divisors, whose sum is σ = 303242239982. Its totient is φ = 303242239980.

The previous prime is 303242239969. The next prime is 303242240023. The reversal of 303242239981 is 189932242303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228379807881 + 74862432100 = 477891^2 + 273610^2 .

It is an emirp because it is prime and its reverse (189932242303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 303242239981 - 2¹¹ = 303242237933 is a prime.

It is a super-2 number, since 2×303242239981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (303242239381) 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, 151621119990 + 151621119991.

It is an arithmetic number, because the mean of its divisors is an integer number (151621119991).

Almost surely, 2^303242239981 is an apocalyptic number.

It is an amenable number.

303242239981 is a deficient number, since it is larger than the sum of its proper divisors (1).

303242239981 is an equidigital number, since it uses as much as digits as its factorization.

303242239981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 303242239981 in words is "three hundred three billion, two hundred forty-two million, two hundred thirty-nine thousand, nine hundred eighty-one".