211011111313 has 2 divisors, whose sum is σ = 211011111314. Its totient is φ = 211011111312.

The previous prime is 211011111247. The next prime is 211011111331. The reversal of 211011111313 is 313111110112.

Together with next prime (211011111331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159274424464 + 51736686849 = 399092^2 + 227457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211011111313 is a prime.

It is not a weakly prime, because it can be changed into another prime (211011111343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505555656 + 105505555657.

It is an arithmetic number, because the mean of its divisors is an integer number (105505555657).

Almost surely, 2^211011111313 is an apocalyptic number.

It is an amenable number.

211011111313 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011111313 is an equidigital number, since it uses as much as digits as its factorization.

211011111313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 211011111313 its reverse (313111110112), we get a palindrome (524122221425).

The spelling of 211011111313 in words is "two hundred eleven billion, eleven million, one hundred eleven thousand, three hundred thirteen".