331371012 has 96 divisors (see below), whose sum is σ = 907583488. Its totient is φ = 92150784.

The previous prime is 331371011. The next prime is 331371037. The reversal of 331371012 is 210173133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 331371012.

It is not an unprimeable number, because it can be changed into a prime (331371011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545613 + ... + 546219.

Almost surely, 2^331371012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331371012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453791744).

331371012 is an abundant number, since it is smaller than the sum of its proper divisors (576212476).

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

331371012 is a wasteful number, since it uses less digits than its factorization.

331371012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 331371012 is about 18203.5988749478. The cubic root of 331371012 is about 691.9979980340.

The spelling of 331371012 in words is "three hundred thirty-one million, three hundred seventy-one thousand, twelve".