131403434054509 has 2 divisors, whose sum is σ = 131403434054510. Its totient is φ = 131403434054508.

The previous prime is 131403434054489. The next prime is 131403434054531. The reversal of 131403434054509 is 905450434304131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114271930938025 + 17131503116484 = 10689805^2 + 4139022^2 .

It is a cyclic number.

It is not a de Polignac number, because 131403434054509 - 2³¹ = 131401286570861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131403434954509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701717027254 + 65701717027255.

It is an arithmetic number, because the mean of its divisors is an integer number (65701717027255).

Almost surely, 2^{131403434054509} is an apocalyptic number.

It is an amenable number.

131403434054509 is a deficient number, since it is larger than the sum of its proper divisors (1).

131403434054509 is an equidigital number, since it uses as much as digits as its factorization.

131403434054509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 131403434054509 in words is "one hundred thirty-one trillion, four hundred three billion, four hundred thirty-four million, fifty-four thousand, five hundred nine".