163023021 has 24 divisors (see below), whose sum is σ = 283283520. Its totient is φ = 88252416.

The previous prime is 163022987. The next prime is 163023023. The reversal of 163023021 is 120320361.

163023021 is a `hidden beast` number, since 1 + 630 + 2 + 30 + 2 + 1 = 666.

It is not a de Polignac number, because 163023021 - 2¹⁰ = 163021997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163022985 and 163023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163023023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66900 + ... + 69293.

It is an arithmetic number, because the mean of its divisors is an integer number (11803480).

Almost surely, 2^163023021 is an apocalyptic number.

It is an amenable number.

163023021 is a deficient number, since it is larger than the sum of its proper divisors (120260499).

163023021 is a wasteful number, since it uses less digits than its factorization.

163023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136225 (or 136222 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 163023021 is about 12768.0468749140. The cubic root of 163023021 is about 546.2812723781.

Adding to 163023021 its reverse (120320361), we get a palindrome (283343382).

The spelling of 163023021 in words is "one hundred sixty-three million, twenty-three thousand, twenty-one".