2143244317 has 2 divisors, whose sum is σ = 2143244318. Its totient is φ = 2143244316.

The previous prime is 2143244297. The next prime is 2143244329. The reversal of 2143244317 is 7134423412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2038161316 + 105083001 = 45146^2 + 10251^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143244317 - 2¹⁹ = 2142720029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143244617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071622158 + 1071622159.

It is an arithmetic number, because the mean of its divisors is an integer number (1071622159).

Almost surely, 2^2143244317 is an apocalyptic number.

It is an amenable number.

2143244317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143244317 is an equidigital number, since it uses as much as digits as its factorization.

2143244317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 2143244317 is about 46295.1867584525. The cubic root of 2143244317 is about 1289.3096314030.

Adding to 2143244317 its reverse (7134423412), we get a palindrome (9277667729).

The spelling of 2143244317 in words is "two billion, one hundred forty-three million, two hundred forty-four thousand, three hundred seventeen".