320203212 has 48 divisors (see below), whose sum is σ = 858342912. Its totient is φ = 91008000.

The previous prime is 320203199. The next prime is 320203243. The reversal of 320203212 is 212302023.

It is a junction number, because it is equal to n+sod(n) for n = 320203191 and 320203200.

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, 6337 + ... + 26087.

It is an arithmetic number, because the mean of its divisors is an integer number (17882144).

Almost surely, 2^320203212 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 320203212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429171456).

320203212 is an abundant number, since it is smaller than the sum of its proper divisors (538139700).

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

320203212 is a wasteful number, since it uses less digits than its factorization.

320203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19958 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320203212 is about 17894.2228666126. Note that the first 3 decimals coincide. The cubic root of 320203212 is about 684.1351345466.

Adding to 320203212 its reverse (212302023), we get a palindrome (532505235).

The spelling of 320203212 in words is "three hundred twenty million, two hundred three thousand, two hundred twelve".