2040200100391 has 2 divisors, whose sum is σ = 2040200100392. Its totient is φ = 2040200100390.

The previous prime is 2040200100377. The next prime is 2040200100443. The reversal of 2040200100391 is 1930010020402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2040200100391 - 2⁹ = 2040200099879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040200104391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020100050195 + 1020100050196.

It is an arithmetic number, because the mean of its divisors is an integer number (1020100050196).

Almost surely, 2^{2040200100391} is an apocalyptic number.

2040200100391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040200100391 is an equidigital number, since it uses as much as digits as its factorization.

2040200100391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2040200100391 its reverse (1930010020402), we get a palindrome (3970210120793).

The spelling of 2040200100391 in words is "two trillion, forty billion, two hundred million, one hundred thousand, three hundred ninety-one".