131526230557 has 2 divisors, whose sum is σ = 131526230558. Its totient is φ = 131526230556.

The previous prime is 131526230551. The next prime is 131526230579. The reversal of 131526230557 is 755032625131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91594601316 + 39931629241 = 302646^2 + 199829^2 .

It is an emirp because it is prime and its reverse (755032625131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131526230557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131526230551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65763115278 + 65763115279.

It is an arithmetic number, because the mean of its divisors is an integer number (65763115279).

Almost surely, 2^131526230557 is an apocalyptic number.

It is an amenable number.

131526230557 is a deficient number, since it is larger than the sum of its proper divisors (1).

131526230557 is an equidigital number, since it uses as much as digits as its factorization.

131526230557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 40.

Adding to 131526230557 its reverse (755032625131), we get a palindrome (886558855688).

The spelling of 131526230557 in words is "one hundred thirty-one billion, five hundred twenty-six million, two hundred thirty thousand, five hundred fifty-seven".