131297545789 has 2 divisors, whose sum is σ = 131297545790. Its totient is φ = 131297545788.

The previous prime is 131297545777. The next prime is 131297545823. The reversal of 131297545789 is 987545792131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86250879225 + 45046666564 = 293685^2 + 212242^2 .

It is a cyclic number.

It is not a de Polignac number, because 131297545789 - 2⁷ = 131297545661 is a prime.

It is a super-3 number, since 3×131297545789³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131297540789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65648772894 + 65648772895.

It is an arithmetic number, because the mean of its divisors is an integer number (65648772895).

Almost surely, 2^131297545789 is an apocalyptic number.

It is an amenable number.

131297545789 is a deficient number, since it is larger than the sum of its proper divisors (1).

131297545789 is an equidigital number, since it uses as much as digits as its factorization.

131297545789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19051200, while the sum is 61.

The spelling of 131297545789 in words is "one hundred thirty-one billion, two hundred ninety-seven million, five hundred forty-five thousand, seven hundred eighty-nine".