163423330 has 24 divisors (see below), whose sum is σ = 342189468. Its totient is φ = 56030688.

The previous prime is 163423307. The next prime is 163423343. The reversal of 163423330 is 33324361.

163423330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 24631369 = 11781^2 + 4963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163423295 and 163423304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166269 + ... + 167248.

Almost surely, 2^163423330 is an apocalyptic number.

163423330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163423330 is an abundant number, since it is smaller than the sum of its proper divisors (178766138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163423330 is a wasteful number, since it uses less digits than its factorization.

163423330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333538 (or 333531 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 163423330 is about 12783.7134667514. The cubic root of 163423330 is about 546.7280447807.

Adding to 163423330 its reverse (33324361), we get a palindrome (196747691).

It can be divided in two parts, 1634 and 23330, that added together give a square (24964 = 158²).

The spelling of 163423330 in words is "one hundred sixty-three million, four hundred twenty-three thousand, three hundred thirty".