331143012 has 96 divisors (see below), whose sum is σ = 887846400. Its totient is φ = 106672896.

The previous prime is 331142971. The next prime is 331143047. The reversal of 331143012 is 210341133.

It is a super-3 number, since 3×331143012³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451398 + ... + 452130.

It is an arithmetic number, because the mean of its divisors is an integer number (9248400).

Almost surely, 2^331143012 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 331143012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443923200).

331143012 is an abundant number, since it is smaller than the sum of its proper divisors (556703388).

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

331143012 is a wasteful number, since it uses less digits than its factorization.

331143012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 331143012 is about 18197.3352994333. The cubic root of 331143012 is about 691.8392517572.

Adding to 331143012 its reverse (210341133), we get a palindrome (541484145).

The spelling of 331143012 in words is "three hundred thirty-one million, one hundred forty-three thousand, twelve".