211443149 has 2 divisors, whose sum is σ = 211443150. Its totient is φ = 211443148.

The previous prime is 211443137. The next prime is 211443151. The reversal of 211443149 is 941344112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132411049 + 79032100 = 11507^2 + 8890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211443149 is a prime.

It is a super-3 number, since 3×211443149³ (a number of 26 digits) contains 333 as substring.

Together with 211443151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211443119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105721574 + 105721575.

It is an arithmetic number, because the mean of its divisors is an integer number (105721575).

Almost surely, 2^211443149 is an apocalyptic number.

It is an amenable number.

211443149 is a deficient number, since it is larger than the sum of its proper divisors (1).

211443149 is an equidigital number, since it uses as much as digits as its factorization.

211443149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 211443149 is about 14541.0848632418. The cubic root of 211443149 is about 595.7506698868.

The spelling of 211443149 in words is "two hundred eleven million, four hundred forty-three thousand, one hundred forty-nine".