165313303 has 2 divisors, whose sum is σ = 165313304. Its totient is φ = 165313302.

The previous prime is 165313289. The next prime is 165313327. The reversal of 165313303 is 303313561.

It is a weak prime.

It is an emirp because it is prime and its reverse (303313561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165313303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165313333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82656651 + 82656652.

It is an arithmetic number, because the mean of its divisors is an integer number (82656652).

Almost surely, 2^165313303 is an apocalyptic number.

165313303 is a deficient number, since it is larger than the sum of its proper divisors (1).

165313303 is an equidigital number, since it uses as much as digits as its factorization.

165313303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 165313303 is about 12857.4220977613. The cubic root of 165313303 is about 548.8275885469.

Adding to 165313303 its reverse (303313561), we get a palindrome (468626864).

The spelling of 165313303 in words is "one hundred sixty-five million, three hundred thirteen thousand, three hundred three".