163113220 has 24 divisors (see below), whose sum is σ = 344812608. Its totient is φ = 64812000.

The previous prime is 163113193. The next prime is 163113221. The reversal of 163113220 is 22311361.

It is a super-3 number, since 3×163113220³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (163113221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23986 + ... + 30025.

It is an arithmetic number, because the mean of its divisors is an integer number (14367192).

Almost surely, 2^163113220 is an apocalyptic number.

163113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163113220 is an abundant number, since it is smaller than the sum of its proper divisors (181699388).

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

163113220 is a wasteful number, since it uses less digits than its factorization.

163113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54171 (or 54169 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 163113220 is about 12771.5786025064. The cubic root of 163113220 is about 546.3820044492.

Adding to 163113220 its reverse (22311361), we get a palindrome (185424581).

The spelling of 163113220 in words is "one hundred sixty-three million, one hundred thirteen thousand, two hundred twenty".