304313143 has 6 divisors (see below), whose sum is σ = 314447352. Its totient is φ = 294495660.

The previous prime is 304313137. The next prime is 304313147. The reversal of 304313143 is 341313403.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-304313143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304313147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157371 + ... + 159292.

It is an arithmetic number, because the mean of its divisors is an integer number (52407892).

Almost surely, 2^304313143 is an apocalyptic number.

304313143 is a deficient number, since it is larger than the sum of its proper divisors (10134209).

304313143 is an equidigital number, since it uses as much as digits as its factorization.

304313143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316725 (or 316694 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 304313143 is about 17444.5734542293. The cubic root of 304313143 is about 672.6258747350.

Adding to 304313143 its reverse (341313403), we get a palindrome (645626546).

The spelling of 304313143 in words is "three hundred four million, three hundred thirteen thousand, one hundred forty-three".