211304423489 has 2 divisors, whose sum is σ = 211304423490. Its totient is φ = 211304423488.

The previous prime is 211304423453. The next prime is 211304423497. The reversal of 211304423489 is 984324403112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128098136464 + 83206287025 = 357908^2 + 288455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211304423489 is a prime.

It is not a weakly prime, because it can be changed into another prime (211304423989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105652211744 + 105652211745.

It is an arithmetic number, because the mean of its divisors is an integer number (105652211745).

Almost surely, 2^211304423489 is an apocalyptic number.

It is an amenable number.

211304423489 is a deficient number, since it is larger than the sum of its proper divisors (1).

211304423489 is an equidigital number, since it uses as much as digits as its factorization.

211304423489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 211304423489 in words is "two hundred eleven billion, three hundred four million, four hundred twenty-three thousand, four hundred eighty-nine".