305230143 has 8 divisors (see below), whose sum is σ = 407309056. Its totient is φ = 203319000.

The previous prime is 305230141. The next prime is 305230151. The reversal of 305230143 is 341032503.

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

It is not a de Polignac number, because 305230143 - 2¹ = 305230141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305230141) 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, 37633 + ... + 45018.

It is an arithmetic number, because the mean of its divisors is an integer number (50913632).

Almost surely, 2^305230143 is an apocalyptic number.

305230143 is a deficient number, since it is larger than the sum of its proper divisors (102078913).

305230143 is a wasteful number, since it uses less digits than its factorization.

305230143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83885.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 305230143 is about 17470.8369290083. The cubic root of 305230143 is about 673.3008148255.

Adding to 305230143 its reverse (341032503), we get a palindrome (646262646).

The spelling of 305230143 in words is "three hundred five million, two hundred thirty thousand, one hundred forty-three".