213130111 has 2 divisors, whose sum is σ = 213130112. Its totient is φ = 213130110.

The previous prime is 213130103. The next prime is 213130117. The reversal of 213130111 is 111031312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213130111 - 2³ = 213130103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213130091 and 213130100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130117) 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, 106565055 + 106565056.

It is an arithmetic number, because the mean of its divisors is an integer number (106565056).

Almost surely, 2^213130111 is an apocalyptic number.

213130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130111 is an equidigital number, since it uses as much as digits as its factorization.

213130111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 213130111 is about 14598.9763682253. The cubic root of 213130111 is about 597.3308389434.

Adding to 213130111 its reverse (111031312), we get a palindrome (324161423).

It can be divided in two parts, 2131301 and 11, that added together give a palindrome (2131312).

The spelling of 213130111 in words is "two hundred thirteen million, one hundred thirty thousand, one hundred eleven".