304422143 has 2 divisors, whose sum is σ = 304422144. Its totient is φ = 304422142.

The previous prime is 304422133. The next prime is 304422229. The reversal of 304422143 is 341224403.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304422143 is a prime.

It is a super-2 number, since 2×304422143² = 185345682297424898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304422133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152211071 + 152211072.

It is an arithmetic number, because the mean of its divisors is an integer number (152211072).

Almost surely, 2^304422143 is an apocalyptic number.

304422143 is a deficient number, since it is larger than the sum of its proper divisors (1).

304422143 is an equidigital number, since it uses as much as digits as its factorization.

304422143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 304422143 is about 17447.6973552386. The cubic root of 304422143 is about 672.7061730179.

Adding to 304422143 its reverse (341224403), we get a palindrome (645646546).

The spelling of 304422143 in words is "three hundred four million, four hundred twenty-two thousand, one hundred forty-three".