243144073 has 2 divisors, whose sum is σ = 243144074. Its totient is φ = 243144072.

The previous prime is 243144071. The next prime is 243144107. The reversal of 243144073 is 370441342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205836409 + 37307664 = 14347^2 + 6108^2 .

It is a cyclic number.

It is not a de Polignac number, because 243144073 - 2¹ = 243144071 is a prime.

It is a super-3 number, since 3×243144073³ (a number of 26 digits) contains 333 as substring.

Together with 243144071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243144071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121572036 + 121572037.

It is an arithmetic number, because the mean of its divisors is an integer number (121572037).

Almost surely, 2^243144073 is an apocalyptic number.

It is an amenable number.

243144073 is a deficient number, since it is larger than the sum of its proper divisors (1).

243144073 is an equidigital number, since it uses as much as digits as its factorization.

243144073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 243144073 is about 15593.0777269916. The cubic root of 243144073 is about 624.1484492651.

The spelling of 243144073 in words is "two hundred forty-three million, one hundred forty-four thousand, seventy-three".