304143109 has 2 divisors, whose sum is σ = 304143110. Its totient is φ = 304143108.

The previous prime is 304143079. The next prime is 304143131. The reversal of 304143109 is 901341403.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300328900 + 3814209 = 17330^2 + 1953^2 .

It is a cyclic number.

It is not a de Polignac number, because 304143109 - 2¹³ = 304134917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304143179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152071554 + 152071555.

It is an arithmetic number, because the mean of its divisors is an integer number (152071555).

Almost surely, 2^304143109 is an apocalyptic number.

It is an amenable number.

304143109 is a deficient number, since it is larger than the sum of its proper divisors (1).

304143109 is an equidigital number, since it uses as much as digits as its factorization.

304143109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 304143109 is about 17439.6992233238. The cubic root of 304143109 is about 672.5005755397.

The spelling of 304143109 in words is "three hundred four million, one hundred forty-three thousand, one hundred nine".