2143251017 has 2 divisors, whose sum is σ = 2143251018. Its totient is φ = 2143251016.

The previous prime is 2143250971. The next prime is 2143251023. The reversal of 2143251017 is 7101523412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2137120441 + 6130576 = 46229^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143251017 - 2³⁰ = 1069509193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143251037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071625508 + 1071625509.

It is an arithmetic number, because the mean of its divisors is an integer number (1071625509).

Almost surely, 2^2143251017 is an apocalyptic number.

It is an amenable number.

2143251017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143251017 is an equidigital number, since it uses as much as digits as its factorization.

2143251017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2143251017 is about 46295.2591201302. The cubic root of 2143251017 is about 1289.3109749060.

Adding to 2143251017 its reverse (7101523412), we get a palindrome (9244774429).

The spelling of 2143251017 in words is "two billion, one hundred forty-three million, two hundred fifty-one thousand, seventeen".