243034453273 has 2 divisors, whose sum is σ = 243034453274. Its totient is φ = 243034453272.

The previous prime is 243034453271. The next prime is 243034453301. The reversal of 243034453273 is 372354430342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191413250064 + 51621203209 = 437508^2 + 227203^2 .

It is a cyclic number.

It is not a de Polignac number, because 243034453273 - 2¹ = 243034453271 is a prime.

Together with 243034453271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243034453271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121517226636 + 121517226637.

It is an arithmetic number, because the mean of its divisors is an integer number (121517226637).

Almost surely, 2^243034453273 is an apocalyptic number.

It is an amenable number.

243034453273 is a deficient number, since it is larger than the sum of its proper divisors (1).

243034453273 is an equidigital number, since it uses as much as digits as its factorization.

243034453273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 40.

The spelling of 243034453273 in words is "two hundred forty-three billion, thirty-four million, four hundred fifty-three thousand, two hundred seventy-three".