163120320 has 336 divisors, whose sum is σ = 646663680. Its totient is φ = 37324800.

The previous prime is 163120313. The next prime is 163120327. The reversal of 163120320 is 23021361.

163120320 is a `hidden beast` number, since 1 + 631 + 2 + 0 + 32 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (163120313) and next prime (163120327).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 163120293 and 163120302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163120327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 601785 + ... + 602055.

Almost surely, 2^163120320 is an apocalyptic number.

163120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323331840).

163120320 is an abundant number, since it is smaller than the sum of its proper divisors (483543360).

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

163120320 is a wasteful number, since it uses less digits than its factorization.

163120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 311 counting only the distinct ones).

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

The square root of 163120320 is about 12771.8565604222. The cubic root of 163120320 is about 546.3899319815.

Adding to 163120320 its reverse (23021361), we get a palindrome (186141681).

The spelling of 163120320 in words is "one hundred sixty-three million, one hundred twenty thousand, three hundred twenty".