203144323099 has 2 divisors, whose sum is σ = 203144323100. Its totient is φ = 203144323098.

The previous prime is 203144323001. The next prime is 203144323199. The reversal of 203144323099 is 990323441302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203144323099 - 2⁷ = 203144322971 is a prime.

It is not a weakly prime, because it can be changed into another prime (203144323199) 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, 101572161549 + 101572161550.

It is an arithmetic number, because the mean of its divisors is an integer number (101572161550).

Almost surely, 2^203144323099 is an apocalyptic number.

203144323099 is a deficient number, since it is larger than the sum of its proper divisors (1).

203144323099 is an equidigital number, since it uses as much as digits as its factorization.

203144323099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 203144323099 in words is "two hundred three billion, one hundred forty-four million, three hundred twenty-three thousand, ninety-nine".