331142994 has 72 divisors (see below), whose sum is σ = 887956992. Its totient is φ = 87328800.

The previous prime is 331142971. The next prime is 331143047. The reversal of 331142994 is 499241133.

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 35 ways as a sum of consecutive naturals, for example, 13519 + ... + 29069.

It is an arithmetic number, because the mean of its divisors is an integer number (12332736).

Almost surely, 2^331142994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331142994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443978496).

331142994 is an abundant number, since it is smaller than the sum of its proper divisors (556813998).

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

331142994 is a wasteful number, since it uses less digits than its factorization.

331142994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15592 (or 15576 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 331142994 is about 18197.3348048554. The cubic root of 331142994 is about 691.8392392217.

The spelling of 331142994 in words is "three hundred thirty-one million, one hundred forty-two thousand, nine hundred ninety-four".