2143250971 has 2 divisors, whose sum is σ = 2143250972. Its totient is φ = 2143250970.

The previous prime is 2143250957. The next prime is 2143251017. The reversal of 2143250971 is 1790523412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143250971 - 2²⁵ = 2109696539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143250371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071625485 + 1071625486.

It is an arithmetic number, because the mean of its divisors is an integer number (1071625486).

Almost surely, 2^2143250971 is an apocalyptic number.

2143250971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143250971 is an equidigital number, since it uses as much as digits as its factorization.

2143250971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2143250971 is about 46295.2586233191. The cubic root of 2143250971 is about 1289.3109656819.

The spelling of 2143250971 in words is "two billion, one hundred forty-three million, two hundred fifty thousand, nine hundred seventy-one".