131212839261589 has 2 divisors, whose sum is σ = 131212839261590. Its totient is φ = 131212839261588.

The previous prime is 131212839261541. The next prime is 131212839261599. The reversal of 131212839261589 is 985162938212131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127937408927364 + 3275430334225 = 11310942^2 + 1809815^2 .

It is a cyclic number.

It is not a de Polignac number, because 131212839261589 - 2³¹ = 131210691777941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131212839261599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606419630794 + 65606419630795.

It is an arithmetic number, because the mean of its divisors is an integer number (65606419630795).

Almost surely, 2^{131212839261589} is an apocalyptic number.

It is an amenable number.

131212839261589 is a deficient number, since it is larger than the sum of its proper divisors (1).

131212839261589 is an equidigital number, since it uses as much as digits as its factorization.

131212839261589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 61.

The spelling of 131212839261589 in words is "one hundred thirty-one trillion, two hundred twelve billion, eight hundred thirty-nine million, two hundred sixty-one thousand, five hundred eighty-nine".