213906271 has 2 divisors, whose sum is σ = 213906272. Its totient is φ = 213906270.

The previous prime is 213906269. The next prime is 213906299. The reversal of 213906271 is 172609312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213906271 - 2¹ = 213906269 is a prime.

Together with 213906269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213966271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106953135 + 106953136.

It is an arithmetic number, because the mean of its divisors is an integer number (106953136).

Almost surely, 2^213906271 is an apocalyptic number.

213906271 is a deficient number, since it is larger than the sum of its proper divisors (1).

213906271 is an equidigital number, since it uses as much as digits as its factorization.

213906271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 213906271 is about 14625.5348962012. The cubic root of 213906271 is about 598.0550642240.

The spelling of 213906271 in words is "two hundred thirteen million, nine hundred six thousand, two hundred seventy-one".