13143305 has 8 divisors (see below), whose sum is σ = 18025152. Its totient is φ = 9012528.

The previous prime is 13143301. The next prime is 13143313. The reversal of 13143305 is 50334131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13143305 - 2² = 13143301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187727 + ... + 187796.

It is an arithmetic number, because the mean of its divisors is an integer number (2253144).

Almost surely, 2^13143305 is an apocalyptic number.

It is an amenable number.

13143305 is a deficient number, since it is larger than the sum of its proper divisors (4881847).

13143305 is an equidigital number, since it uses as much as digits as its factorization.

13143305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375535.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 13143305 is about 3625.3696363268. The cubic root of 13143305 is about 235.9943082511.

Adding to 13143305 its reverse (50334131), we get a palindrome (63477436).

The spelling of 13143305 in words is "thirteen million, one hundred forty-three thousand, three hundred five".