131031525487 has 2 divisors, whose sum is σ = 131031525488. Its totient is φ = 131031525486.

The previous prime is 131031525473. The next prime is 131031525511. The reversal of 131031525487 is 784525130131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131031525487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131031525437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515762743 + 65515762744.

It is an arithmetic number, because the mean of its divisors is an integer number (65515762744).

Almost surely, 2^131031525487 is an apocalyptic number.

131031525487 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031525487 is an equidigital number, since it uses as much as digits as its factorization.

131031525487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 131031525487 in words is "one hundred thirty-one billion, thirty-one million, five hundred twenty-five thousand, four hundred eighty-seven".