331111012 has 6 divisors (see below), whose sum is σ = 579444278. Its totient is φ = 165555504.

The previous prime is 331111003. The next prime is 331111019. The reversal of 331111012 is 210111133.

331111012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 186486336 + 144624676 = 13656^2 + 12026^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331110983 and 331111001.

It is not an unprimeable number, because it can be changed into a prime (331111019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41388873 + ... + 41388880.

Almost surely, 2^331111012 is an apocalyptic number.

It is an amenable number.

331111012 is a deficient number, since it is larger than the sum of its proper divisors (248333266).

331111012 is a wasteful number, since it uses less digits than its factorization.

331111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82777757 (or 82777755 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 331111012 is about 18196.4560285788. The cubic root of 331111012 is about 691.8169657474.

Adding to 331111012 its reverse (210111133), we get a palindrome (541222145).

The spelling of 331111012 in words is "three hundred thirty-one million, one hundred eleven thousand, twelve".