131110220203309 has 2 divisors, whose sum is σ = 131110220203310. Its totient is φ = 131110220203308.

The previous prime is 131110220203273. The next prime is 131110220203351. The reversal of 131110220203309 is 903302022011131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71501737456900 + 59608482746409 = 8455870^2 + 7720653^2 .

It is a cyclic number.

It is not a de Polignac number, because 131110220203309 - 2³¹ = 131108072719661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131110220203399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65555110101654 + 65555110101655.

It is an arithmetic number, because the mean of its divisors is an integer number (65555110101655).

Almost surely, 2^{131110220203309} is an apocalyptic number.

It is an amenable number.

131110220203309 is a deficient number, since it is larger than the sum of its proper divisors (1).

131110220203309 is an equidigital number, since it uses as much as digits as its factorization.

131110220203309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 131110220203309 in words is "one hundred thirty-one trillion, one hundred ten billion, two hundred twenty million, two hundred three thousand, three hundred nine".