165303023 has 2 divisors, whose sum is σ = 165303024. Its totient is φ = 165303022.

The previous prime is 165303011. The next prime is 165303029. The reversal of 165303023 is 320303561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165303023 - 2⁴ = 165303007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165303023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165303029) 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, 82651511 + 82651512.

It is an arithmetic number, because the mean of its divisors is an integer number (82651512).

Almost surely, 2^165303023 is an apocalyptic number.

165303023 is a deficient number, since it is larger than the sum of its proper divisors (1).

165303023 is an equidigital number, since it uses as much as digits as its factorization.

165303023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 165303023 is about 12857.0223224509. The cubic root of 165303023 is about 548.8162120385.

Adding to 165303023 its reverse (320303561), we get a palindrome (485606584).

The spelling of 165303023 in words is "one hundred sixty-five million, three hundred three thousand, twenty-three".