163423239 has 16 divisors (see below), whose sum is σ = 250470912. Its totient is φ = 92842848.

The previous prime is 163423231. The next prime is 163423279. The reversal of 163423239 is 932324361.

163423239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163423239 - 2³ = 163423231 is a prime.

It is a super-2 number, since 2×163423239² = 53414310090502242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163423231) 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, 18859 + ... + 26124.

It is an arithmetic number, because the mean of its divisors is an integer number (15654432).

Almost surely, 2^163423239 is an apocalyptic number.

163423239 is a deficient number, since it is larger than the sum of its proper divisors (87047673).

163423239 is a wasteful number, since it uses less digits than its factorization.

163423239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45166.

The product of its digits is 23328, while the sum is 33.

The square root of 163423239 is about 12783.7099075347. The cubic root of 163423239 is about 546.7279433014.

The spelling of 163423239 in words is "one hundred sixty-three million, four hundred twenty-three thousand, two hundred thirty-nine".