2311272749 has 2 divisors, whose sum is σ = 2311272750. Its totient is φ = 2311272748.

The previous prime is 2311272721. The next prime is 2311272751. The reversal of 2311272749 is 9472721132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1437774724 + 873498025 = 37918^2 + 29555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311272749 is a prime.

Together with 2311272751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311272449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155636374 + 1155636375.

It is an arithmetic number, because the mean of its divisors is an integer number (1155636375).

Almost surely, 2^2311272749 is an apocalyptic number.

It is an amenable number.

2311272749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311272749 is an equidigital number, since it uses as much as digits as its factorization.

2311272749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 2311272749 is about 48075.6981124559. The cubic root of 2311272749 is about 1322.1591440538.

The spelling of 2311272749 in words is "two billion, three hundred eleven million, two hundred seventy-two thousand, seven hundred forty-nine".