2531523871 has 2 divisors, whose sum is σ = 2531523872. Its totient is φ = 2531523870.

The previous prime is 2531523859. The next prime is 2531523889. The reversal of 2531523871 is 1783251352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2531523871 - 2²⁷ = 2397306143 is a prime.

It is a super-2 number, since 2×2531523871² = 12817226218885649282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2531523871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531523811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265761935 + 1265761936.

It is an arithmetic number, because the mean of its divisors is an integer number (1265761936).

Almost surely, 2^2531523871 is an apocalyptic number.

2531523871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531523871 is an equidigital number, since it uses as much as digits as its factorization.

2531523871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 2531523871 is about 50314.2511720089. The cubic root of 2531523871 is about 1362.8895941240.

The spelling of 2531523871 in words is "two billion, five hundred thirty-one million, five hundred twenty-three thousand, eight hundred seventy-one".