213333212317 has 2 divisors, whose sum is σ = 213333212318. Its totient is φ = 213333212316.

The previous prime is 213333212251. The next prime is 213333212329. The reversal of 213333212317 is 713212333312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167265458361 + 46067753956 = 408981^2 + 214634^2 .

It is a cyclic number.

It is not a de Polignac number, because 213333212317 - 2⁷ = 213333212189 is a prime.

It is a super-2 number, since 2×213333212317² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213333212377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666606158 + 106666606159.

It is an arithmetic number, because the mean of its divisors is an integer number (106666606159).

Almost surely, 2^213333212317 is an apocalyptic number.

It is an amenable number.

213333212317 is a deficient number, since it is larger than the sum of its proper divisors (1).

213333212317 is an equidigital number, since it uses as much as digits as its factorization.

213333212317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 31.

Adding to 213333212317 its reverse (713212333312), we get a palindrome (926545545629).

The spelling of 213333212317 in words is "two hundred thirteen billion, three hundred thirty-three million, two hundred twelve thousand, three hundred seventeen".