320432112 has 600 divisors, whose sum is σ = 1317951360. Its totient is φ = 72783360.

The previous prime is 320432111. The next prime is 320432149. The reversal of 320432112 is 211234023.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320432111) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 16864839 + ... + 16864857.

Almost surely, 2^320432112 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 320432112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658975680).

320432112 is an abundant number, since it is smaller than the sum of its proper divisors (997519248).

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

320432112 is a wasteful number, since it uses less digits than its factorization.

320432112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 320432112 is about 17900.6176429753. The cubic root of 320432112 is about 684.2981156639.

Adding to 320432112 its reverse (211234023), we get a palindrome (531666135).

The spelling of 320432112 in words is "three hundred twenty million, four hundred thirty-two thousand, one hundred twelve".