213303012 has 144 divisors (see below), whose sum is σ = 597663360. Its totient is φ = 58865664.

The previous prime is 213303001. The next prime is 213303017. The reversal of 213303012 is 210303312.

It is a junction number, because it is equal to n+sod(n) for n = 213302982 and 213303000.

It is not an unprimeable number, because it can be changed into a prime (213303017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 792814 + ... + 793082.

It is an arithmetic number, because the mean of its divisors is an integer number (4150440).

Almost surely, 2^213303012 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 213303012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298831680).

213303012 is an abundant number, since it is smaller than the sum of its proper divisors (384360348).

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

213303012 is a wasteful number, since it uses less digits than its factorization.

213303012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 213303012 is about 14604.8968500294. The cubic root of 213303012 is about 597.4923227482.

Adding to 213303012 its reverse (210303312), we get a palindrome (423606324).

It can be divided in two parts, 21330 and 3012, that added together give a palindrome (24342).

The spelling of 213303012 in words is "two hundred thirteen million, three hundred three thousand, twelve".