193043243 has 2 divisors, whose sum is σ = 193043244. Its totient is φ = 193043242.

The previous prime is 193043183. The next prime is 193043273. The reversal of 193043243 is 342340391.

193043243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193043243 - 2¹⁰ = 193042219 is a prime.

It is equal to p_10714853 and since 193043243 and 10714853 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (193043273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96521621 + 96521622.

It is an arithmetic number, because the mean of its divisors is an integer number (96521622).

Almost surely, 2^193043243 is an apocalyptic number.

193043243 is a deficient number, since it is larger than the sum of its proper divisors (1).

193043243 is an equidigital number, since it uses as much as digits as its factorization.

193043243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 193043243 is about 13894.0002519073. Note that the first 3 decimals coincide. The cubic root of 193043243 is about 577.9428141122.

The spelling of 193043243 in words is "one hundred ninety-three million, forty-three thousand, two hundred forty-three".