213241303181 has 2 divisors, whose sum is σ = 213241303182. Its totient is φ = 213241303180.

The previous prime is 213241303169. The next prime is 213241303199. The reversal of 213241303181 is 181303142312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192694660900 + 20546642281 = 438970^2 + 143341^2 .

It is a cyclic number.

It is not a de Polignac number, because 213241303181 - 2¹⁸ = 213241041037 is a prime.

It is a super-2 number, since 2×213241303181² (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 (213241333181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106620651590 + 106620651591.

It is an arithmetic number, because the mean of its divisors is an integer number (106620651591).

Almost surely, 2^213241303181 is an apocalyptic number.

It is an amenable number.

213241303181 is a deficient number, since it is larger than the sum of its proper divisors (1).

213241303181 is an equidigital number, since it uses as much as digits as its factorization.

213241303181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 213241303181 its reverse (181303142312), we get a palindrome (394544445493).

The spelling of 213241303181 in words is "two hundred thirteen billion, two hundred forty-one million, three hundred three thousand, one hundred eighty-one".