213657163 has 2 divisors, whose sum is σ = 213657164. Its totient is φ = 213657162.

The previous prime is 213657161. The next prime is 213657187. The reversal of 213657163 is 361756312.

213657163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213657163 - 2¹ = 213657161 is a prime.

Together with 213657161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213657161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106828581 + 106828582.

It is an arithmetic number, because the mean of its divisors is an integer number (106828582).

Almost surely, 2^213657163 is an apocalyptic number.

213657163 is a deficient number, since it is larger than the sum of its proper divisors (1).

213657163 is an equidigital number, since it uses as much as digits as its factorization.

213657163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 213657163 is about 14617.0162139884. The cubic root of 213657163 is about 597.8228158189.

The spelling of 213657163 in words is "two hundred thirteen million, six hundred fifty-seven thousand, one hundred sixty-three".