243223677631511 has 2 divisors, whose sum is σ = 243223677631512. Its totient is φ = 243223677631510.

The previous prime is 243223677631469. The next prime is 243223677631579. The reversal of 243223677631511 is 115136776322342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243223677631511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243223677630511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121611838815755 + 121611838815756.

It is an arithmetic number, because the mean of its divisors is an integer number (121611838815756).

Almost surely, 2^{243223677631511} is an apocalyptic number.

243223677631511 is a deficient number, since it is larger than the sum of its proper divisors (1).

243223677631511 is an equidigital number, since it uses as much as digits as its factorization.

243223677631511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 53.

The spelling of 243223677631511 in words is "two hundred forty-three trillion, two hundred twenty-three billion, six hundred seventy-seven million, six hundred thirty-one thousand, five hundred eleven".