331020312 has 32 divisors (see below), whose sum is σ = 945772800. Its totient is φ = 94577184.

The previous prime is 331020271. The next prime is 331020323. The reversal of 331020312 is 213020133.

It is a junction number, because it is equal to n+sod(n) for n = 331020291 and 331020300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985012 + ... + 985347.

It is an arithmetic number, because the mean of its divisors is an integer number (29555400).

Almost surely, 2^331020312 is an apocalyptic number.

It is an amenable number.

331020312 is an abundant number, since it is smaller than the sum of its proper divisors (614752488).

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

331020312 is a wasteful number, since it uses less digits than its factorization.

331020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970375 (or 1970371 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 331020312 is about 18193.9636143420. The cubic root of 331020312 is about 691.7537910347.

Adding to 331020312 its reverse (213020133), we get a palindrome (544040445).

The spelling of 331020312 in words is "three hundred thirty-one million, twenty thousand, three hundred twelve".