331021012 has 12 divisors (see below), whose sum is σ = 662042080. Its totient is φ = 141866136.

The previous prime is 331020961. The next prime is 331021013. The reversal of 331021012 is 210120133.

331021012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 331020983 and 331021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331021013) 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, 5911062 + ... + 5911117.

Almost surely, 2^331021012 is an apocalyptic number.

It is an amenable number.

331021012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

331021012 is a wasteful number, since it uses less digits than its factorization.

331021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822190 (or 11822188 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 331021012 is about 18193.9828514814. The cubic root of 331021012 is about 691.7542786456.

Adding to 331021012 its reverse (210120133), we get a palindrome (541141145).

The spelling of 331021012 in words is "three hundred thirty-one million, twenty-one thousand, twelve".