302303143 has 2 divisors, whose sum is σ = 302303144. Its totient is φ = 302303142.

The previous prime is 302303117. The next prime is 302303159. The reversal of 302303143 is 341303203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302303143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 302303143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302301143) 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, 151151571 + 151151572.

It is an arithmetic number, because the mean of its divisors is an integer number (151151572).

Almost surely, 2^302303143 is an apocalyptic number.

302303143 is a deficient number, since it is larger than the sum of its proper divisors (1).

302303143 is an equidigital number, since it uses as much as digits as its factorization.

302303143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 302303143 is about 17386.8669690660. The cubic root of 302303143 is about 671.1416956555.

Adding to 302303143 its reverse (341303203), we get a palindrome (643606346).

The spelling of 302303143 in words is "three hundred two million, three hundred three thousand, one hundred forty-three".