305340145 has 16 divisors (see below), whose sum is σ = 423232128. Its totient is φ = 209002240.

The previous prime is 305340143. The next prime is 305340193. The reversal of 305340145 is 541043503.

It is not a de Polignac number, because 305340145 - 2¹ = 305340143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305340143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162349 + ... + 164218.

It is an arithmetic number, because the mean of its divisors is an integer number (26452008).

Almost surely, 2^305340145 is an apocalyptic number.

It is an amenable number.

305340145 is a deficient number, since it is larger than the sum of its proper divisors (117891983).

305340145 is a wasteful number, since it uses less digits than its factorization.

305340145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326600.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 305340145 is about 17473.9848059909. The cubic root of 305340145 is about 673.3816888178.

Adding to 305340145 its reverse (541043503), we get a palindrome (846383648).

The spelling of 305340145 in words is "three hundred five million, three hundred forty thousand, one hundred forty-five".