211323313849 has 2 divisors, whose sum is σ = 211323313850. Its totient is φ = 211323313848.

The previous prime is 211323313843. The next prime is 211323313879. The reversal of 211323313849 is 948313323112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208264449600 + 3058864249 = 456360^2 + 55307^2 .

It is a cyclic number.

It is not a de Polignac number, because 211323313849 - 2²⁷ = 211189096121 is a prime.

It is a super-2 number, since 2×211323313849² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211323313843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105661656924 + 105661656925.

It is an arithmetic number, because the mean of its divisors is an integer number (105661656925).

Almost surely, 2^211323313849 is an apocalyptic number.

It is an amenable number.

211323313849 is a deficient number, since it is larger than the sum of its proper divisors (1).

211323313849 is an equidigital number, since it uses as much as digits as its factorization.

211323313849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The spelling of 211323313849 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred thirteen thousand, eight hundred forty-nine".