303340993 has 2 divisors, whose sum is σ = 303340994. Its totient is φ = 303340992.

The previous prime is 303340991. The next prime is 303341053. The reversal of 303340993 is 399043303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302481664 + 859329 = 17392^2 + 927^2 .

It is an emirp because it is prime and its reverse (399043303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 303340993 - 2¹ = 303340991 is a prime.

Together with 303340991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (303340991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151670496 + 151670497.

It is an arithmetic number, because the mean of its divisors is an integer number (151670497).

Almost surely, 2^303340993 is an apocalyptic number.

It is an amenable number.

303340993 is a deficient number, since it is larger than the sum of its proper divisors (1).

303340993 is an equidigital number, since it uses as much as digits as its factorization.

303340993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 34.

The square root of 303340993 is about 17416.6871993499. The cubic root of 303340993 is about 671.9088602600.

The spelling of 303340993 in words is "three hundred three million, three hundred forty thousand, nine hundred ninety-three".