13145305 has 16 divisors (see below), whose sum is σ = 16591104. Its totient is φ = 9979200.

The previous prime is 13145299. The next prime is 13145311. The reversal of 13145305 is 50354131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13145299) and next prime (13145311).

It is not a de Polignac number, because 13145305 - 2⁵ = 13145273 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 15 ways as a sum of consecutive naturals, for example, 16987 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (1036944).

Almost surely, 2^13145305 is an apocalyptic number.

It is an amenable number.

13145305 is a deficient number, since it is larger than the sum of its proper divisors (3445799).

13145305 is a wasteful number, since it uses less digits than its factorization.

13145305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13145305 is about 3625.6454597768. The cubic root of 13145305 is about 236.0062779619.

Adding to 13145305 its reverse (50354131), we get a palindrome (63499436).

The spelling of 13145305 in words is "thirteen million, one hundred forty-five thousand, three hundred five".