2520131287 has 2 divisors, whose sum is σ = 2520131288. Its totient is φ = 2520131286.

The previous prime is 2520131281. The next prime is 2520131347. The reversal of 2520131287 is 7821310252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520131287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520131281) 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 as a sum of consecutive naturals, namely, 1260065643 + 1260065644.

It is an arithmetic number, because the mean of its divisors is an integer number (1260065644).

Almost surely, 2^2520131287 is an apocalyptic number.

2520131287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520131287 is an equidigital number, since it uses as much as digits as its factorization.

2520131287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2520131287 is about 50200.9092248338. The cubic root of 2520131287 is about 1360.8420547602.

The spelling of 2520131287 in words is "two billion, five hundred twenty million, one hundred thirty-one thousand, two hundred eighty-seven".