381832211 has 2 divisors, whose sum is σ = 381832212. Its totient is φ = 381832210.

The previous prime is 381832169. The next prime is 381832229. The reversal of 381832211 is 112238183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381832211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381832261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190916105 + 190916106.

It is an arithmetic number, because the mean of its divisors is an integer number (190916106).

Almost surely, 2^381832211 is an apocalyptic number.

381832211 is a deficient number, since it is larger than the sum of its proper divisors (1).

381832211 is an equidigital number, since it uses as much as digits as its factorization.

381832211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 381832211 is about 19540.5273982050. The cubic root of 381832211 is about 725.4779003696.

The spelling of 381832211 in words is "three hundred eighty-one million, eight hundred thirty-two thousand, two hundred eleven".