331005044040 has 128 divisors (see below), whose sum is σ = 1083426192000. Its totient is φ = 80233502720.

The previous prime is 331005044021. The next prime is 331005044053. The reversal of 331005044040 is 40440500133.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 331005044040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19988404 + ... + 20004956.

It is an arithmetic number, because the mean of its divisors is an integer number (8464267125).

Almost surely, 2^331005044040 is an apocalyptic number.

331005044040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331005044040 is an abundant number, since it is smaller than the sum of its proper divisors (752421147960).

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

331005044040 is a wasteful number, since it uses less digits than its factorization.

331005044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31727 (or 31723 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 331005044040 its reverse (40440500133), we get a palindrome (371445544173).

The spelling of 331005044040 in words is "three hundred thirty-one billion, five million, forty-four thousand, forty".