211719953 has 2 divisors, whose sum is σ = 211719954. Its totient is φ = 211719952.

The previous prime is 211719919. The next prime is 211719971. The reversal of 211719953 is 359917112.

211719953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193126609 + 18593344 = 13897^2 + 4312^2 .

It is a cyclic number.

It is not a de Polignac number, because 211719953 - 2¹⁰ = 211718929 is a prime.

It is not a weakly prime, because it can be changed into another prime (211719353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105859976 + 105859977.

It is an arithmetic number, because the mean of its divisors is an integer number (105859977).

Almost surely, 2^211719953 is an apocalyptic number.

It is an amenable number.

211719953 is a deficient number, since it is larger than the sum of its proper divisors (1).

211719953 is an equidigital number, since it uses as much as digits as its factorization.

211719953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 211719953 is about 14550.5997470895. The cubic root of 211719953 is about 596.0105258039.

The spelling of 211719953 in words is "two hundred eleven million, seven hundred nineteen thousand, nine hundred fifty-three".