163435023 has 16 divisors (see below), whose sum is σ = 242483200. Its totient is φ = 108795960.

The previous prime is 163435021. The next prime is 163435037. The reversal of 163435023 is 320534361.

It is a happy number.

163435023 is a `hidden beast` number, since 1 + 634 + 3 + 5 + 0 + 23 = 666.

It is not a de Polignac number, because 163435023 - 2¹ = 163435021 is a prime.

It is a super-2 number, since 2×163435023² = 53422013486021058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163435021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15858 + ... + 24048.

It is an arithmetic number, because the mean of its divisors is an integer number (15155200).

Almost surely, 2^163435023 is an apocalyptic number.

163435023 is a deficient number, since it is larger than the sum of its proper divisors (79048177).

163435023 is an equidigital number, since it uses as much as digits as its factorization.

163435023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939 (or 8933 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 163435023 is about 12784.1707982958. The cubic root of 163435023 is about 546.7410840013.

Adding to 163435023 its reverse (320534361), we get a palindrome (483969384).

The spelling of 163435023 in words is "one hundred sixty-three million, four hundred thirty-five thousand, twenty-three".