331332012 has 96 divisors (see below), whose sum is σ = 944697600. Its totient is φ = 99590400.

The previous prime is 331332011. The next prime is 331332019. The reversal of 331332012 is 210233133.

331332012 is a `hidden beast` number, since 331 + 3 + 320 + 12 = 666.

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 (331332011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154564 + ... + 156692.

It is an arithmetic number, because the mean of its divisors is an integer number (9840600).

Almost surely, 2^331332012 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 331332012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472348800).

331332012 is an abundant number, since it is smaller than the sum of its proper divisors (613365588).

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

331332012 is a wasteful number, since it uses less digits than its factorization.

331332012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 331332012 is about 18202.5276266787. The cubic root of 331332012 is about 691.9708492292.

Adding to 331332012 its reverse (210233133), we get a palindrome (541565145).

The spelling of 331332012 in words is "three hundred thirty-one million, three hundred thirty-two thousand, twelve".