304222143 has 8 divisors (see below), whose sum is σ = 411683968. Its totient is φ = 199787544.

The previous prime is 304222133. The next prime is 304222147. The reversal of 304222143 is 341222403.

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

It is not a de Polignac number, because 304222143 - 2⁵ = 304222111 is a prime.

It is a super-2 number, since 2×304222143² = 185102224583024898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304222147) 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, 756571 + ... + 756972.

It is an arithmetic number, because the mean of its divisors is an integer number (51460496).

Almost surely, 2^304222143 is an apocalyptic number.

304222143 is a deficient number, since it is larger than the sum of its proper divisors (107461825).

304222143 is a wasteful number, since it uses less digits than its factorization.

304222143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513613.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 304222143 is about 17441.9649982449. The cubic root of 304222143 is about 672.5588220315.

Adding to 304222143 its reverse (341222403), we get a palindrome (645444546).

The spelling of 304222143 in words is "three hundred four million, two hundred twenty-two thousand, one hundred forty-three".