203123142223 has 4 divisors (see below), whose sum is σ = 203128623880. Its totient is φ = 203117660568.

The previous prime is 203123142199. The next prime is 203123142283. The reversal of 203123142223 is 322241321302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203123142223 - 2⁵ = 203123142191 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 (203123142283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684865 + ... + 2759482.

It is an arithmetic number, because the mean of its divisors is an integer number (50782155970).

Almost surely, 2^203123142223 is an apocalyptic number.

203123142223 is a deficient number, since it is larger than the sum of its proper divisors (5481657).

203123142223 is an equidigital number, since it uses as much as digits as its factorization.

203123142223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481656.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 203123142223 its reverse (322241321302), we get a palindrome (525364463525).

The spelling of 203123142223 in words is "two hundred three billion, one hundred twenty-three million, one hundred forty-two thousand, two hundred twenty-three".