2531131297 has 2 divisors, whose sum is σ = 2531131298. Its totient is φ = 2531131296.

The previous prime is 2531131271. The next prime is 2531131387. The reversal of 2531131297 is 7921311352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2255870016 + 275261281 = 47496^2 + 16591^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531131297 - 2²⁷ = 2396913569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2531131247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265565648 + 1265565649.

It is an arithmetic number, because the mean of its divisors is an integer number (1265565649).

Almost surely, 2^2531131297 is an apocalyptic number.

It is an amenable number.

2531131297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531131297 is an equidigital number, since it uses as much as digits as its factorization.

2531131297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 2531131297 is about 50310.3498000163. The cubic root of 2531131297 is about 1362.8191408179.

The spelling of 2531131297 in words is "two billion, five hundred thirty-one million, one hundred thirty-one thousand, two hundred ninety-seven".