211538273 has 2 divisors, whose sum is σ = 211538274. Its totient is φ = 211538272.

The previous prime is 211538231. The next prime is 211538297. The reversal of 211538273 is 372835112.

211538273 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., 202435984 + 9102289 = 14228^2 + 3017^2 .

It is a cyclic number.

It is not a de Polignac number, because 211538273 - 2¹² = 211534177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211538573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105769136 + 105769137.

It is an arithmetic number, because the mean of its divisors is an integer number (105769137).

Almost surely, 2^211538273 is an apocalyptic number.

It is an amenable number.

211538273 is a deficient number, since it is larger than the sum of its proper divisors (1).

211538273 is an equidigital number, since it uses as much as digits as its factorization.

211538273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 211538273 is about 14544.3553655705. The cubic root of 211538273 is about 595.8399952222.

The spelling of 211538273 in words is "two hundred eleven million, five hundred thirty-eight thousand, two hundred seventy-three".