130344217 has 2 divisors, whose sum is σ = 130344218. Its totient is φ = 130344216.

The previous prime is 130344209. The next prime is 130344283. The reversal of 130344217 is 712443031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75272976 + 55071241 = 8676^2 + 7421^2 .

It is a cyclic number.

It is not a de Polignac number, because 130344217 - 2³ = 130344209 is a prime.

It is a super-2 number, since 2×130344217² = 33979229810686178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130344191 and 130344200.

It is not a weakly prime, because it can be changed into another prime (130344017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65172108 + 65172109.

It is an arithmetic number, because the mean of its divisors is an integer number (65172109).

Almost surely, 2^130344217 is an apocalyptic number.

It is an amenable number.

130344217 is a deficient number, since it is larger than the sum of its proper divisors (1).

130344217 is an equidigital number, since it uses as much as digits as its factorization.

130344217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 130344217 is about 11416.8391860444. The cubic root of 130344217 is about 507.0264190075.

Adding to 130344217 its reverse (712443031), we get a palindrome (842787248).

The spelling of 130344217 in words is "one hundred thirty million, three hundred forty-four thousand, two hundred seventeen".