243153143 has 2 divisors, whose sum is σ = 243153144. Its totient is φ = 243153142.

The previous prime is 243153121. The next prime is 243153187. The reversal of 243153143 is 341351342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243153143 - 2¹⁴ = 243136759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243153343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121576571 + 121576572.

It is an arithmetic number, because the mean of its divisors is an integer number (121576572).

Almost surely, 2^243153143 is an apocalyptic number.

243153143 is a deficient number, since it is larger than the sum of its proper divisors (1).

243153143 is an equidigital number, since it uses as much as digits as its factorization.

243153143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 243153143 is about 15593.3685584610. The cubic root of 243153143 is about 624.1562100356.

The spelling of 243153143 in words is "two hundred forty-three million, one hundred fifty-three thousand, one hundred forty-three".