2531131271 has 2 divisors, whose sum is σ = 2531131272. Its totient is φ = 2531131270.

The previous prime is 2531131259. The next prime is 2531131297. The reversal of 2531131271 is 1721311352.

It is an a-pointer prime, because the next prime (2531131297) can be obtained adding 2531131271 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531131271 is a prime.

It is a super-2 number, since 2×2531131271² = 12813251022068150882, 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 2531131271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531131201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265565635 + 1265565636.

It is an arithmetic number, because the mean of its divisors is an integer number (1265565636).

Almost surely, 2^2531131271 is an apocalyptic number.

2531131271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531131271 is an equidigital number, since it uses as much as digits as its factorization.

2531131271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 2531131271 is about 50310.3495416202. The cubic root of 2531131271 is about 1362.8191361516.

The spelling of 2531131271 in words is "two billion, five hundred thirty-one million, one hundred thirty-one thousand, two hundred seventy-one".