20004140323 has 2 divisors, whose sum is σ = 20004140324. Its totient is φ = 20004140322.

The previous prime is 20004140311. The next prime is 20004140327. The reversal of 20004140323 is 32304140002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20004140323 - 2⁹ = 20004139811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004140323.

It is not a weakly prime, because it can be changed into another prime (20004140327) 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, 10002070161 + 10002070162.

It is an arithmetic number, because the mean of its divisors is an integer number (10002070162).

Almost surely, 2^20004140323 is an apocalyptic number.

20004140323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004140323 is an equidigital number, since it uses as much as digits as its factorization.

20004140323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20004140323 its reverse (32304140002), we get a palindrome (52308280325).

The spelling of 20004140323 in words is "twenty billion, four million, one hundred forty thousand, three hundred twenty-three".