2001340043 has 2 divisors, whose sum is σ = 2001340044. Its totient is φ = 2001340042.

The previous prime is 2001340021. The next prime is 2001340051. The reversal of 2001340043 is 3400431002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001340043 - 2²⁰ = 2000291467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001340543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000670021 + 1000670022.

It is an arithmetic number, because the mean of its divisors is an integer number (1000670022).

Almost surely, 2^2001340043 is an apocalyptic number.

2001340043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001340043 is an equidigital number, since it uses as much as digits as its factorization.

2001340043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2001340043 is about 44736.3391774517. The cubic root of 2001340043 is about 1260.2023784694.

Adding to 2001340043 its reverse (3400431002), we get a palindrome (5401771045).

The spelling of 2001340043 in words is "two billion, one million, three hundred forty thousand, forty-three".