2531781712 has 40 divisors (see below), whose sum is σ = 5304410496. Its totient is φ = 1166071296.

The previous prime is 2531781709. The next prime is 2531781713. The reversal of 2531781712 is 2171871352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531781713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86238 + ... + 111805.

Almost surely, 2^2531781712 is an apocalyptic number.

It is an amenable number.

2531781712 is an abundant number, since it is smaller than the sum of its proper divisors (2772628784).

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

2531781712 is a wasteful number, since it uses less digits than its factorization.

2531781712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198115 (or 198109 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 2531781712 is about 50316.8134126159. The cubic root of 2531781712 is about 1362.9358636049.

The spelling of 2531781712 in words is "two billion, five hundred thirty-one million, seven hundred eighty-one thousand, seven hundred twelve".