13712305 has 4 divisors (see below), whose sum is σ = 16454772. Its totient is φ = 10969840.

The previous prime is 13712299. The next prime is 13712339. The reversal of 13712305 is 50321731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50321731 = 3793 ⋅13267.

It can be written as a sum of positive squares in 2 ways, for example, as 3751969 + 9960336 = 1937^2 + 3156^2 .

It is not a de Polignac number, because 13712305 - 2¹⁵ = 13679537 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371226 + ... + 1371235.

It is an arithmetic number, because the mean of its divisors is an integer number (4113693).

Almost surely, 2^13712305 is an apocalyptic number.

It is an amenable number.

13712305 is a deficient number, since it is larger than the sum of its proper divisors (2742467).

13712305 is an equidigital number, since it uses as much as digits as its factorization.

13712305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742466.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 13712305 is about 3703.0129624402. The cubic root of 13712305 is about 239.3518681618.

The spelling of 13712305 in words is "thirteen million, seven hundred twelve thousand, three hundred five".