180341305 has 4 divisors (see below), whose sum is σ = 216409572. Its totient is φ = 144273040.

The previous prime is 180341297. The next prime is 180341309. The reversal of 180341305 is 503143081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87160896 + 93180409 = 9336^2 + 9653^2 .

It is not a de Polignac number, because 180341305 - 2³ = 180341297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180341305.

It is not an unprimeable number, because it can be changed into a prime (180341309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18034126 + ... + 18034135.

It is an arithmetic number, because the mean of its divisors is an integer number (54102393).

Almost surely, 2^180341305 is an apocalyptic number.

It is an amenable number.

180341305 is a deficient number, since it is larger than the sum of its proper divisors (36068267).

180341305 is an equidigital number, since it uses as much as digits as its factorization.

180341305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36068266.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 180341305 is about 13429.1215274864. The cubic root of 180341305 is about 564.9782590115.

Adding to 180341305 its reverse (503143081), we get a palindrome (683484386).

The spelling of 180341305 in words is "one hundred eighty million, three hundred forty-one thousand, three hundred five".