203143012004423 has 6 divisors (see below), whose sum is σ = 214397472503664. Its totient is φ = 192451274530164.

The previous prime is 203143012004417. The next prime is 203143012004447. The reversal of 203143012004423 is 324400210341302.

It is not a de Polignac number, because 203143012004423 - 2⁴ = 203143012004407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203143012004923) 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 in 5 ways as a sum of consecutive naturals, for example, 281361512111 + ... + 281361512832.

It is an arithmetic number, because the mean of its divisors is an integer number (35732912083944).

Almost surely, 2^{203143012004423} is an apocalyptic number.

203143012004423 is a deficient number, since it is larger than the sum of its proper divisors (11254460499241).

203143012004423 is an equidigital number, since it uses as much as digits as its factorization.

203143012004423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562723024981 (or 562723024962 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 203143012004423 its reverse (324400210341302), we get a palindrome (527543222345725).

The spelling of 203143012004423 in words is "two hundred three trillion, one hundred forty-three billion, twelve million, four thousand, four hundred twenty-three".