211323370213 has 2 divisors, whose sum is σ = 211323370214. Its totient is φ = 211323370212.

The previous prime is 211323370189. The next prime is 211323370259. The reversal of 211323370213 is 312073323112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186867727524 + 24455642689 = 432282^2 + 156383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211323370213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211323370813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105661685106 + 105661685107.

It is an arithmetic number, because the mean of its divisors is an integer number (105661685107).

Almost surely, 2^211323370213 is an apocalyptic number.

It is an amenable number.

211323370213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211323370213 is an equidigital number, since it uses as much as digits as its factorization.

211323370213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 211323370213 its reverse (312073323112), we get a palindrome (523396693325).

The spelling of 211323370213 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred seventy thousand, two hundred thirteen".