131318783093 has 2 divisors, whose sum is σ = 131318783094. Its totient is φ = 131318783092.

The previous prime is 131318783077. The next prime is 131318783171. The reversal of 131318783093 is 390387813131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129616560529 + 1702222564 = 360023^2 + 41258^2 .

It is a cyclic number.

It is not a de Polignac number, because 131318783093 - 2⁴ = 131318783077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131318783293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65659391546 + 65659391547.

It is an arithmetic number, because the mean of its divisors is an integer number (65659391547).

Almost surely, 2^131318783093 is an apocalyptic number.

It is an amenable number.

131318783093 is a deficient number, since it is larger than the sum of its proper divisors (1).

131318783093 is an equidigital number, since it uses as much as digits as its factorization.

131318783093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 131318783093 in words is "one hundred thirty-one billion, three hundred eighteen million, seven hundred eighty-three thousand, ninety-three".