2031120520 has 192 divisors, whose sum is σ = 5697720000. Its totient is φ = 645511680.

The previous prime is 2031120499. The next prime is 2031120529. The reversal of 2031120520 is 250211302.

It is a junction number, because it is equal to n+sod(n) for n = 2031120494 and 2031120503.

It is not an unprimeable number, because it can be changed into a prime (2031120529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1194631 + ... + 1196329.

It is an arithmetic number, because the mean of its divisors is an integer number (29675625).

Almost surely, 2^2031120520 is an apocalyptic number.

2031120520 is a gapful number since it is divisible by the number (20) 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 2031120520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848860000).

2031120520 is an abundant number, since it is smaller than the sum of its proper divisors (3666599480).

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

2031120520 is a wasteful number, since it uses less digits than its factorization.

2031120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2031120520 is about 45067.9544687797. The cubic root of 2031120520 is about 1266.4223446897.

Adding to 2031120520 its reverse (250211302), we get a palindrome (2281331822).

The spelling of 2031120520 in words is "two billion, thirty-one million, one hundred twenty thousand, five hundred twenty".