3031131121320 has 128 divisors (see below), whose sum is σ = 9288914400000. Its totient is φ = 791055175680.

The previous prime is 3031131121261. The next prime is 3031131121387. The reversal of 3031131121320 is 231211311303.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 416256 + ... + 2497104.

It is an arithmetic number, because the mean of its divisors is an integer number (72569643750).

Almost surely, 2^{3031131121320} is an apocalyptic number.

3031131121320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3031131121320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4644457200000).

3031131121320 is an abundant number, since it is smaller than the sum of its proper divisors (6257783278680).

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

3031131121320 is a wasteful number, since it uses less digits than its factorization.

3031131121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081123 (or 2081119 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 3031131121320 its reverse (231211311303), we get a palindrome (3262342432623).

The spelling of 3031131121320 in words is "three trillion, thirty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred twenty".