203030023123 has 4 divisors (see below), whose sum is σ = 203097680248. Its totient is φ = 202962366000.

The previous prime is 203030023121. The next prime is 203030023139. The reversal of 203030023123 is 321320030302.

It is a happy number.

203030023123 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 not a de Polignac number, because 203030023123 - 2¹ = 203030023121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203030023123.

It is not an unprimeable number, because it can be changed into a prime (203030023121) 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, 33824061 + ... + 33830062.

It is an arithmetic number, because the mean of its divisors is an integer number (50774420062).

Almost surely, 2^203030023123 is an apocalyptic number.

203030023123 is a deficient number, since it is larger than the sum of its proper divisors (67657125).

203030023123 is an equidigital number, since it uses as much as digits as its factorization.

203030023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67657124.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 203030023123 its reverse (321320030302), we get a palindrome (524350053425).

The spelling of 203030023123 in words is "two hundred three billion, thirty million, twenty-three thousand, one hundred twenty-three".