130531998217 has 2 divisors, whose sum is σ = 130531998218. Its totient is φ = 130531998216.

The previous prime is 130531998139. The next prime is 130531998253. The reversal of 130531998217 is 712899135031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122324363001 + 8207635216 = 349749^2 + 90596^2 .

It is an emirp because it is prime and its reverse (712899135031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130531998217 - 2⁷ = 130531998089 is a prime.

It is not a weakly prime, because it can be changed into another prime (130531998617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65265999108 + 65265999109.

It is an arithmetic number, because the mean of its divisors is an integer number (65265999109).

Almost surely, 2^130531998217 is an apocalyptic number.

It is an amenable number.

130531998217 is a deficient number, since it is larger than the sum of its proper divisors (1).

130531998217 is an equidigital number, since it uses as much as digits as its factorization.

130531998217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 130531998217 in words is "one hundred thirty billion, five hundred thirty-one million, nine hundred ninety-eight thousand, two hundred seventeen".