2143232009 has 2 divisors, whose sum is σ = 2143232010. Its totient is φ = 2143232008.

The previous prime is 2143231999. The next prime is 2143232029. The reversal of 2143232009 is 9002323412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1861663609 + 281568400 = 43147^2 + 16780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143232009 - 2¹² = 2143227913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143232029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071616004 + 1071616005.

It is an arithmetic number, because the mean of its divisors is an integer number (1071616005).

Almost surely, 2^2143232009 is an apocalyptic number.

It is an amenable number.

2143232009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143232009 is an equidigital number, since it uses as much as digits as its factorization.

2143232009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2143232009 is about 46295.0538286759. The cubic root of 2143232009 is about 1289.3071633606.

The spelling of 2143232009 in words is "two billion, one hundred forty-three million, two hundred thirty-two thousand, nine".