130656209 has 2 divisors, whose sum is σ = 130656210. Its totient is φ = 130656208.

The previous prime is 130656199. The next prime is 130656241. The reversal of 130656209 is 902656031.

It is a happy number.

It is an a-pointer prime, because the next prime (130656241) can be obtained adding 130656209 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94090000 + 36566209 = 9700^2 + 6047^2 .

It is an emirp because it is prime and its reverse (902656031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130656209 - 2⁸ = 130655953 is a prime.

It is not a weakly prime, because it can be changed into another prime (130656269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65328104 + 65328105.

It is an arithmetic number, because the mean of its divisors is an integer number (65328105).

Almost surely, 2^130656209 is an apocalyptic number.

It is an amenable number.

130656209 is a deficient number, since it is larger than the sum of its proper divisors (1).

130656209 is an equidigital number, since it uses as much as digits as its factorization.

130656209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 130656209 is about 11430.4946962063. The cubic root of 130656209 is about 507.4306362527.

The spelling of 130656209 in words is "one hundred thirty million, six hundred fifty-six thousand, two hundred nine".