203123130123 has 8 divisors (see below), whose sum is σ = 286762066128. Its totient is φ = 127449807104.

The previous prime is 203123130109. The next prime is 203123130127. The reversal of 203123130123 is 321031321302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203123130123 - 2⁴ = 203123130107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203123130123.

It is not an unprimeable number, because it can be changed into a prime (203123130127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1991403186 + ... + 1991403287.

It is an arithmetic number, because the mean of its divisors is an integer number (35845258266).

Almost surely, 2^203123130123 is an apocalyptic number.

203123130123 is a deficient number, since it is larger than the sum of its proper divisors (83638936005).

203123130123 is a wasteful number, since it uses less digits than its factorization.

203123130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982806493.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 203123130123 its reverse (321031321302), we get a palindrome (524154451425).

The spelling of 203123130123 in words is "two hundred three billion, one hundred twenty-three million, one hundred thirty thousand, one hundred twenty-three".