213132287 has 2 divisors, whose sum is σ = 213132288. Its totient is φ = 213132286.

The previous prime is 213132259. The next prime is 213132299. The reversal of 213132287 is 782231312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213132287 - 2¹² = 213128191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213132217) 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, 106566143 + 106566144.

It is an arithmetic number, because the mean of its divisors is an integer number (106566144).

Almost surely, 2^213132287 is an apocalyptic number.

213132287 is a deficient number, since it is larger than the sum of its proper divisors (1).

213132287 is an equidigital number, since it uses as much as digits as its factorization.

213132287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 213132287 is about 14599.0508938081. The cubic root of 213132287 is about 597.3328717979.

Adding to 213132287 its reverse (782231312), we get a palindrome (995363599).

The spelling of 213132287 in words is "two hundred thirteen million, one hundred thirty-two thousand, two hundred eighty-seven".