30804143 has 2 divisors, whose sum is σ = 30804144. Its totient is φ = 30804142.

The previous prime is 30804133. The next prime is 30804167. The reversal of 30804143 is 34140803.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30804143 - 2¹⁶ = 30738607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30804113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15402071 + 15402072.

It is an arithmetic number, because the mean of its divisors is an integer number (15402072).

Almost surely, 2^30804143 is an apocalyptic number.

30804143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30804143 is an equidigital number, since it uses as much as digits as its factorization.

30804143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30804143 is about 5550.1480160443. The cubic root of 30804143 is about 313.4750956783.

Adding to 30804143 its reverse (34140803), we get a palindrome (64944946).

The spelling of 30804143 in words is "thirty million, eight hundred four thousand, one hundred forty-three".