423111111289 has 2 divisors, whose sum is σ = 423111111290. Its totient is φ = 423111111288.

The previous prime is 423111111287. The next prime is 423111111331. The reversal of 423111111289 is 982111111324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422656014400 + 455096889 = 650120^2 + 21333^2 .

It is a cyclic number.

It is not a de Polignac number, because 423111111289 - 2¹ = 423111111287 is a prime.

Together with 423111111287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (423111111287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211555555644 + 211555555645.

It is an arithmetic number, because the mean of its divisors is an integer number (211555555645).

Almost surely, 2^423111111289 is an apocalyptic number.

It is an amenable number.

423111111289 is a deficient number, since it is larger than the sum of its proper divisors (1).

423111111289 is an equidigital number, since it uses as much as digits as its factorization.

423111111289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 34.

The spelling of 423111111289 in words is "four hundred twenty-three billion, one hundred eleven million, one hundred eleven thousand, two hundred eighty-nine".