331331212 has 12 divisors (see below), whose sum is σ = 584062920. Its totient is φ = 164456096.

The previous prime is 331331201. The next prime is 331331213. The reversal of 331331212 is 212133133.

331331212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 331331212.

It is not an unprimeable number, because it can be changed into a prime (331331213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301762 + ... + 302857.

It is an arithmetic number, because the mean of its divisors is an integer number (48671910).

Almost surely, 2^331331212 is an apocalyptic number.

It is an amenable number.

331331212 is a deficient number, since it is larger than the sum of its proper divisors (252731708).

331331212 is a wasteful number, since it uses less digits than its factorization.

331331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604760 (or 604758 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 331331212 is about 18202.5056516953. The cubic root of 331331212 is about 691.9702923084.

Adding to 331331212 its reverse (212133133), we get a palindrome (543464345).

The spelling of 331331212 in words is "three hundred thirty-one million, three hundred thirty-one thousand, two hundred twelve".