213232673 has 2 divisors, whose sum is σ = 213232674. Its totient is φ = 213232672.

The previous prime is 213232639. The next prime is 213232681. The reversal of 213232673 is 376232312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113891584 + 99341089 = 10672^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 213232673 - 2²² = 209038369 is a prime.

It is not a weakly prime, because it can be changed into another prime (213232633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616336 + 106616337.

It is an arithmetic number, because the mean of its divisors is an integer number (106616337).

Almost surely, 2^213232673 is an apocalyptic number.

It is an amenable number.

213232673 is a deficient number, since it is larger than the sum of its proper divisors (1).

213232673 is an equidigital number, since it uses as much as digits as its factorization.

213232673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 29.

The square root of 213232673 is about 14602.4885892782. The cubic root of 213232673 is about 597.4266389860.

Adding to 213232673 its reverse (376232312), we get a palindrome (589464985).

The spelling of 213232673 in words is "two hundred thirteen million, two hundred thirty-two thousand, six hundred seventy-three".