2531130520 has 32 divisors (see below), whose sum is σ = 5712279120. Its totient is φ = 1009388160.

The previous prime is 2531130491. The next prime is 2531130571. The reversal of 2531130520 is 250311352.

It is a junction number, because it is equal to n+sod(n) for n = 2531130491 and 2531130500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82347 + ... + 108826.

Almost surely, 2^2531130520 is an apocalyptic number.

2531130520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531130520 is an abundant number, since it is smaller than the sum of its proper divisors (3181148600).

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

2531130520 is a wasteful number, since it uses less digits than its factorization.

2531130520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191515 (or 191511 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2531130520 is about 50310.3420779466. The cubic root of 2531130520 is about 1362.8190013664.

Adding to 2531130520 its reverse (250311352), we get a palindrome (2781441872).

The spelling of 2531130520 in words is "two billion, five hundred thirty-one million, one hundred thirty thousand, five hundred twenty".