203243224123 has 4 divisors (see below), whose sum is σ = 203244134688. Its totient is φ = 203242313560.

The previous prime is 203243224103. The next prime is 203243224213. The reversal of 203243224123 is 321422342302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203243224123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203243224091 and 203243224100.

It is not an unprimeable number, because it can be changed into a prime (203243224103) 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 3 ways as a sum of consecutive naturals, for example, 132318 + ... + 651148.

It is an arithmetic number, because the mean of its divisors is an integer number (50811033672).

Almost surely, 2^203243224123 is an apocalyptic number.

203243224123 is a deficient number, since it is larger than the sum of its proper divisors (910565).

203243224123 is an equidigital number, since it uses as much as digits as its factorization.

203243224123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910564.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 203243224123 its reverse (321422342302), we get a palindrome (524665566425).

The spelling of 203243224123 in words is "two hundred three billion, two hundred forty-three million, two hundred twenty-four thousand, one hundred twenty-three".