331091012 has 12 divisors (see below), whose sum is σ = 662182080. Its totient is φ = 141896136.

The previous prime is 331091009. The next prime is 331091021. The reversal of 331091012 is 210190133.

331091012 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5912312 + ... + 5912367.

It is an arithmetic number, because the mean of its divisors is an integer number (55181840).

Almost surely, 2^331091012 is an apocalyptic number.

It is an amenable number.

331091012 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.

331091012 is a wasteful number, since it uses less digits than its factorization.

331091012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11824690 (or 11824688 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 331091012 is about 18195.9064627185. The cubic root of 331091012 is about 691.8030362621.

The spelling of 331091012 in words is "three hundred thirty-one million, ninety-one thousand, twelve".