331039040 has 56 divisors (see below), whose sum is σ = 791992320. Its totient is φ = 131793408.

The previous prime is 331039039. The next prime is 331039067. The reversal of 331039040 is 40930133.

It is a junction number, because it is equal to n+sod(n) for n = 331038997 and 331039015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69041 + ... + 73679.

It is an arithmetic number, because the mean of its divisors is an integer number (14142720).

Almost surely, 2^331039040 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 331039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395996160).

331039040 is an abundant number, since it is smaller than the sum of its proper divisors (460953280).

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

331039040 is a wasteful number, since it uses less digits than its factorization.

331039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879 (or 4869 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 331039040 is about 18194.4782832595. The cubic root of 331039040 is about 691.7668364786.

Adding to 331039040 its reverse (40930133), we get a palindrome (371969173).

The spelling of 331039040 in words is "three hundred thirty-one million, thirty-nine thousand, forty".