103130305 has 4 divisors (see below), whose sum is σ = 123756372. Its totient is φ = 82504240.

The previous prime is 103130299. The next prime is 103130311. The reversal of 103130305 is 503031301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503031301 = 149 ⋅3376049.

It is an interprime number because it is at equal distance from previous prime (103130299) and next prime (103130311).

It can be written as a sum of positive squares in 2 ways, for example, as 76597504 + 26532801 = 8752^2 + 5151^2 .

It is not a de Polignac number, because 103130305 - 2¹⁹ = 102606017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10313026 + ... + 10313035.

It is an arithmetic number, because the mean of its divisors is an integer number (30939093).

Almost surely, 2^103130305 is an apocalyptic number.

It is an amenable number.

103130305 is a deficient number, since it is larger than the sum of its proper divisors (20626067).

103130305 is an equidigital number, since it uses as much as digits as its factorization.

103130305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20626066.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 103130305 is about 10155.3092025797. The cubic root of 103130305 is about 468.9524049155.

Adding to 103130305 its reverse (503031301), we get a palindrome (606161606).

The spelling of 103130305 in words is "one hundred three million, one hundred thirty thousand, three hundred five".