211316405030309 has 2 divisors, whose sum is σ = 211316405030310. Its totient is φ = 211316405030308.

The previous prime is 211316405030293. The next prime is 211316405030399. The reversal of 211316405030309 is 903030504613112.

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., 208888486350625 + 2427918679684 = 14452975^2 + 1558178^2 .

It is a cyclic number.

It is not a de Polignac number, because 211316405030309 - 2⁴ = 211316405030293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211316405030399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105658202515154 + 105658202515155.

It is an arithmetic number, because the mean of its divisors is an integer number (105658202515155).

Almost surely, 2^{211316405030309} is an apocalyptic number.

It is an amenable number.

211316405030309 is a deficient number, since it is larger than the sum of its proper divisors (1).

211316405030309 is an equidigital number, since it uses as much as digits as its factorization.

211316405030309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 211316405030309 in words is "two hundred eleven trillion, three hundred sixteen billion, four hundred five million, thirty thousand, three hundred nine".