2003320091 has 2 divisors, whose sum is σ = 2003320092. Its totient is φ = 2003320090.

The previous prime is 2003320061. The next prime is 2003320097. The reversal of 2003320091 is 1900233002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2003320091 - 2¹⁴ = 2003303707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2003320097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001660045 + 1001660046.

It is an arithmetic number, because the mean of its divisors is an integer number (1001660046).

Almost surely, 2^2003320091 is an apocalyptic number.

2003320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003320091 is an equidigital number, since it uses as much as digits as its factorization.

2003320091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2003320091 is about 44758.4639034898. The cubic root of 2003320091 is about 1260.6178398924.

Adding to 2003320091 its reverse (1900233002), we get a palindrome (3903553093).

The spelling of 2003320091 in words is "two billion, three million, three hundred twenty thousand, ninety-one".