243011471 has 2 divisors, whose sum is σ = 243011472. Its totient is φ = 243011470.

The previous prime is 243011441. The next prime is 243011473. The reversal of 243011471 is 174110342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243011471 - 2¹⁸ = 242749327 is a prime.

It is a super-3 number, since 3×243011471³ (a number of 26 digits) contains 333 as substring.

Together with 243011473, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243011473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121505735 + 121505736.

It is an arithmetic number, because the mean of its divisors is an integer number (121505736).

Almost surely, 2^243011471 is an apocalyptic number.

243011471 is a deficient number, since it is larger than the sum of its proper divisors (1).

243011471 is an equidigital number, since it uses as much as digits as its factorization.

243011471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 243011471 is about 15588.8251962744. The cubic root of 243011471 is about 624.0349659551.

The spelling of 243011471 in words is "two hundred forty-three million, eleven thousand, four hundred seventy-one".