243104522071 has 2 divisors, whose sum is σ = 243104522072. Its totient is φ = 243104522070.

The previous prime is 243104522069. The next prime is 243104522081. The reversal of 243104522071 is 170225401342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243104522071 - 2¹ = 243104522069 is a prime.

It is a super-2 number, since 2×243104522071² (a number of 24 digits) contains 22 as substring.

Together with 243104522069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243104522041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121552261035 + 121552261036.

It is an arithmetic number, because the mean of its divisors is an integer number (121552261036).

Almost surely, 2^243104522071 is an apocalyptic number.

243104522071 is a deficient number, since it is larger than the sum of its proper divisors (1).

243104522071 is an equidigital number, since it uses as much as digits as its factorization.

243104522071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 243104522071 in words is "two hundred forty-three billion, one hundred four million, five hundred twenty-two thousand, seventy-one".