203313121123 has 4 divisors (see below), whose sum is σ = 232357852720. Its totient is φ = 174268389528.

The previous prime is 203313121093. The next prime is 203313121127. The reversal of 203313121123 is 321121313302.

203313121123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203313121123 is a prime.

It is a super-2 number, since 2×203313121123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203313121094 and 203313121103.

It is not an unprimeable number, because it can be changed into a prime (203313121127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14522365788 + ... + 14522365801.

It is an arithmetic number, because the mean of its divisors is an integer number (58089463180).

Almost surely, 2^203313121123 is an apocalyptic number.

203313121123 is a deficient number, since it is larger than the sum of its proper divisors (29044731597).

203313121123 is an equidigital number, since it uses as much as digits as its factorization.

203313121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29044731596.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203313121123 its reverse (321121313302), we get a palindrome (524434434425).

The spelling of 203313121123 in words is "two hundred three billion, three hundred thirteen million, one hundred twenty-one thousand, one hundred twenty-three".