163305023 has 4 divisors (see below), whose sum is σ = 186634320. Its totient is φ = 139975728.

The previous prime is 163305007. The next prime is 163305049. The reversal of 163305023 is 320503361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163305023 - 2⁴ = 163305007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163305023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163305053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11664638 + ... + 11664651.

It is an arithmetic number, because the mean of its divisors is an integer number (46658580).

Almost surely, 2^163305023 is an apocalyptic number.

163305023 is a deficient number, since it is larger than the sum of its proper divisors (23329297).

163305023 is an equidigital number, since it uses as much as digits as its factorization.

163305023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23329296.

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

The square root of 163305023 is about 12779.0853741573. The cubic root of 163305023 is about 546.5960820443.

Adding to 163305023 its reverse (320503361), we get a palindrome (483808384).

The spelling of 163305023 in words is "one hundred sixty-three million, three hundred five thousand, twenty-three".