303242131 has 2 divisors, whose sum is σ = 303242132. Its totient is φ = 303242130.

The previous prime is 303242129. The next prime is 303242171. The reversal of 303242131 is 131242303.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 303242131 - 2¹ = 303242129 is a prime.

It is a super-2 number, since 2×303242131² = 183911580026842322, which contains 22 as substring.

Together with 303242129, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 303242099 and 303242108.

It is not a weakly prime, because it can be changed into another prime (303242111) 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, 151621065 + 151621066.

It is an arithmetic number, because the mean of its divisors is an integer number (151621066).

Almost surely, 2^303242131 is an apocalyptic number.

303242131 is a deficient number, since it is larger than the sum of its proper divisors (1).

303242131 is an equidigital number, since it uses as much as digits as its factorization.

303242131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 303242131 is about 17413.8488278726. The cubic root of 303242131 is about 671.8358582887.

Adding to 303242131 its reverse (131242303), we get a palindrome (434484434).

The spelling of 303242131 in words is "three hundred three million, two hundred forty-two thousand, one hundred thirty-one".