2091320713 has 2 divisors, whose sum is σ = 2091320714. Its totient is φ = 2091320712.

The previous prime is 2091320711. The next prime is 2091320723. The reversal of 2091320713 is 3170231902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410528249 + 680792464 = 37557^2 + 26092^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091320713 - 2¹ = 2091320711 is a prime.

Together with 2091320711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2091320711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045660356 + 1045660357.

It is an arithmetic number, because the mean of its divisors is an integer number (1045660357).

Almost surely, 2^2091320713 is an apocalyptic number.

It is an amenable number.

2091320713 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091320713 is an equidigital number, since it uses as much as digits as its factorization.

2091320713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2091320713 is about 45730.9601145657. The cubic root of 2091320713 is about 1278.8125203165.

The spelling of 2091320713 in words is "two billion, ninety-one million, three hundred twenty thousand, seven hundred thirteen".