13070305 has 4 divisors (see below), whose sum is σ = 15684372. Its totient is φ = 10456240.

The previous prime is 13070303. The next prime is 13070339. The reversal of 13070305 is 50307031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50307031 = 1123 ⋅44797.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 5650129 = 2724^2 + 2377^2 .

It is not a de Polignac number, because 13070305 - 2¹ = 13070303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13070303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1307026 + ... + 1307035.

It is an arithmetic number, because the mean of its divisors is an integer number (3921093).

Almost surely, 2^13070305 is an apocalyptic number.

It is an amenable number.

13070305 is a deficient number, since it is larger than the sum of its proper divisors (2614067).

13070305 is an equidigital number, since it uses as much as digits as its factorization.

13070305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614066.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 13070305 is about 3615.2876787332. The cubic root of 13070305 is about 235.5565802419.

Adding to 13070305 its reverse (50307031), we get a palindrome (63377336).

The spelling of 13070305 in words is "thirteen million, seventy thousand, three hundred five".