2531531251 has 16 divisors (see below), whose sum is σ = 2697377760. Its totient is φ = 2367623680.

The previous prime is 2531531243. The next prime is 2531531257. The reversal of 2531531251 is 1521351352.

It is a cyclic number.

It is not a de Polignac number, because 2531531251 - 2³ = 2531531243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2531531257) 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 15 ways as a sum of consecutive naturals, for example, 2483820 + ... + 2484838.

It is an arithmetic number, because the mean of its divisors is an integer number (168586110).

Almost surely, 2^2531531251 is an apocalyptic number.

2531531251 is a deficient number, since it is larger than the sum of its proper divisors (165846509).

2531531251 is a wasteful number, since it uses less digits than its factorization.

2531531251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814.

The product of its digits is 4500, while the sum is 28.

The square root of 2531531251 is about 50314.3245110177. The cubic root of 2531531251 is about 1362.8909185062.

The spelling of 2531531251 in words is "two billion, five hundred thirty-one million, five hundred thirty-one thousand, two hundred fifty-one".