2531332520 has 16 divisors (see below), whose sum is σ = 5695498260. Its totient is φ = 1012532992.

The previous prime is 2531332511. The next prime is 2531332537. The reversal of 2531332520 is 252331352.

It can be written as a sum of positive squares in 2 ways, for example, as 2462342884 + 68989636 = 49622^2 + 8306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2531332520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31641617 + ... + 31641696.

Almost surely, 2^2531332520 is an apocalyptic number.

2531332520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531332520 is an abundant number, since it is smaller than the sum of its proper divisors (3164165740).

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

2531332520 is a wasteful number, since it uses less digits than its factorization.

2531332520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63283324 (or 63283320 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2531332520 is about 50312.3495774149. The cubic root of 2531332520 is about 1362.8552542203.

Adding to 2531332520 its reverse (252331352), we get a palindrome (2783663872).

The spelling of 2531332520 in words is "two billion, five hundred thirty-one million, three hundred thirty-two thousand, five hundred twenty".