213830117 has 2 divisors, whose sum is σ = 213830118. Its totient is φ = 213830116.

The previous prime is 213830087. The next prime is 213830167. The reversal of 213830117 is 711038312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213568996 + 261121 = 14614^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 213830117 - 2⁶ = 213830053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213830167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106915058 + 106915059.

It is an arithmetic number, because the mean of its divisors is an integer number (106915059).

Almost surely, 2^213830117 is an apocalyptic number.

It is an amenable number.

213830117 is a deficient number, since it is larger than the sum of its proper divisors (1).

213830117 is an equidigital number, since it uses as much as digits as its factorization.

213830117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 213830117 is about 14622.9312041054. The cubic root of 213830117 is about 597.9840834606.

Adding to 213830117 its reverse (711038312), we get a palindrome (924868429).

The spelling of 213830117 in words is "two hundred thirteen million, eight hundred thirty thousand, one hundred seventeen".