331212016 has 40 divisors (see below), whose sum is σ = 669042000. Its totient is φ = 158645760.

The previous prime is 331211989. The next prime is 331212031. The reversal of 331212016 is 610212133.

It is a junction number, because it is equal to n+sod(n) for n = 331211984 and 331212002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 58060 + ... + 63508.

It is an arithmetic number, because the mean of its divisors is an integer number (16726050).

Almost surely, 2^331212016 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 331212016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334521000).

331212016 is an abundant number, since it is smaller than the sum of its proper divisors (337829984).

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

331212016 is a wasteful number, since it uses less digits than its factorization.

331212016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617 (or 5611 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 331212016 is about 18199.2311925532. The cubic root of 331212016 is about 691.8873038659.

Adding to 331212016 its reverse (610212133), we get a palindrome (941424149).

The spelling of 331212016 in words is "three hundred thirty-one million, two hundred twelve thousand, sixteen".