211376161 has 2 divisors, whose sum is σ = 211376162. Its totient is φ = 211376160.

The previous prime is 211376131. The next prime is 211376171. The reversal of 211376161 is 161673112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187169761 + 24206400 = 13681^2 + 4920^2 .

It is a cyclic number.

It is not a de Polignac number, because 211376161 - 2⁹ = 211375649 is a prime.

It is not a weakly prime, because it can be changed into another prime (211376111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105688080 + 105688081.

It is an arithmetic number, because the mean of its divisors is an integer number (105688081).

Almost surely, 2^211376161 is an apocalyptic number.

It is an amenable number.

211376161 is a deficient number, since it is larger than the sum of its proper divisors (1).

211376161 is an equidigital number, since it uses as much as digits as its factorization.

211376161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 211376161 is about 14538.7812762969. The cubic root of 211376161 is about 595.6877493315.

The spelling of 211376161 in words is "two hundred eleven million, three hundred seventy-six thousand, one hundred sixty-one".