130280305 has 4 divisors (see below), whose sum is σ = 156336372. Its totient is φ = 104224240.

The previous prime is 130280291. The next prime is 130280309. The reversal of 130280305 is 503082031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503082031 = 47 ⋅10703873.

It can be written as a sum of positive squares in 2 ways, for example, as 84474481 + 45805824 = 9191^2 + 6768^2 .

It is not a de Polignac number, because 130280305 - 2⁷ = 130280177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130280309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13028026 + ... + 13028035.

It is an arithmetic number, because the mean of its divisors is an integer number (39084093).

Almost surely, 2^130280305 is an apocalyptic number.

It is an amenable number.

130280305 is a deficient number, since it is larger than the sum of its proper divisors (26056067).

130280305 is an equidigital number, since it uses as much as digits as its factorization.

130280305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26056066.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 130280305 is about 11414.0398194504. The cubic root of 130280305 is about 506.9435349561.

The spelling of 130280305 in words is "one hundred thirty million, two hundred eighty thousand, three hundred five".