331204012 has 12 divisors (see below), whose sum is σ = 599593680. Its totient is φ = 159891536.

The previous prime is 331204009. The next prime is 331204033. The reversal of 331204012 is 210402133.

It is a happy number.

It is a super-2 number, since 2×331204012² = 219392195129792288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1427488 + ... + 1427719.

It is an arithmetic number, because the mean of its divisors is an integer number (49966140).

Almost surely, 2^331204012 is an apocalyptic number.

It is an amenable number.

331204012 is a deficient number, since it is larger than the sum of its proper divisors (268389668).

331204012 is a wasteful number, since it uses less digits than its factorization.

331204012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855240 (or 2855238 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 331204012 is about 18199.0112918257. The cubic root of 331204012 is about 691.8817304866.

Adding to 331204012 its reverse (210402133), we get a palindrome (541606145).

The spelling of 331204012 in words is "three hundred thirty-one million, two hundred four thousand, twelve".