2111320313 has 2 divisors, whose sum is σ = 2111320314. Its totient is φ = 2111320312.

The previous prime is 2111320291. The next prime is 2111320331. The reversal of 2111320313 is 3130231112.

Together with next prime (2111320331) 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., 1250895424 + 860424889 = 35368^2 + 29333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111320313 - 2¹⁶ = 2111254777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2111320291 and 2111320300.

It is not a weakly prime, because it can be changed into another prime (2111320373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055660156 + 1055660157.

It is an arithmetic number, because the mean of its divisors is an integer number (1055660157).

Almost surely, 2^2111320313 is an apocalyptic number.

It is an amenable number.

2111320313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111320313 is an equidigital number, since it uses as much as digits as its factorization.

2111320313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2111320313 is about 45949.1056822655. The cubic root of 2111320313 is about 1282.8760834316.

Adding to 2111320313 its reverse (3130231112), we get a palindrome (5241551425).

The spelling of 2111320313 in words is "two billion, one hundred eleven million, three hundred twenty thousand, three hundred thirteen".