213230911 has 2 divisors, whose sum is σ = 213230912. Its totient is φ = 213230910.

The previous prime is 213230893. The next prime is 213230921. The reversal of 213230911 is 119032312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213230911 - 2²⁵ = 179676479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213230921) 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, 106615455 + 106615456.

It is an arithmetic number, because the mean of its divisors is an integer number (106615456).

Almost surely, 2^213230911 is an apocalyptic number.

213230911 is a deficient number, since it is larger than the sum of its proper divisors (1).

213230911 is an equidigital number, since it uses as much as digits as its factorization.

213230911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 213230911 is about 14602.4282569715. The cubic root of 213230911 is about 597.4249934148.

The spelling of 213230911 in words is "two hundred thirteen million, two hundred thirty thousand, nine hundred eleven".