163311232 has 128 divisors (see below), whose sum is σ = 400982400. Its totient is φ = 64696320.

The previous prime is 163311199. The next prime is 163311259. The reversal of 163311232 is 232113361.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902182 + ... + 902362.

It is an arithmetic number, because the mean of its divisors is an integer number (3132675).

Almost surely, 2^163311232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200491200).

163311232 is an abundant number, since it is smaller than the sum of its proper divisors (237671168).

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

163311232 is a wasteful number, since it uses less digits than its factorization.

163311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 262 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 163311232 is about 12779.3283078572. The cubic root of 163311232 is about 546.6030093105.

Adding to 163311232 its reverse (232113361), we get a palindrome (395424593).

The spelling of 163311232 in words is "one hundred sixty-three million, three hundred eleven thousand, two hundred thirty-two".