203403323313143 has 2 divisors, whose sum is σ = 203403323313144. Its totient is φ = 203403323313142.

The previous prime is 203403323313133. The next prime is 203403323313149. The reversal of 203403323313143 is 341313323304302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203403323313143 - 2⁸ = 203403323312887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203403323313149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101701661656571 + 101701661656572.

It is an arithmetic number, because the mean of its divisors is an integer number (101701661656572).

Almost surely, 2^{203403323313143} is an apocalyptic number.

203403323313143 is a deficient number, since it is larger than the sum of its proper divisors (1).

203403323313143 is an equidigital number, since it uses as much as digits as its factorization.

203403323313143 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 35.

Adding to 203403323313143 its reverse (341313323304302), we get a palindrome (544716646617445).

The spelling of 203403323313143 in words is "two hundred three trillion, four hundred three billion, three hundred twenty-three million, three hundred thirteen thousand, one hundred forty-three".