100203103123 has 2 divisors, whose sum is σ = 100203103124. Its totient is φ = 100203103122.

The previous prime is 100203103087. The next prime is 100203103139. The reversal of 100203103123 is 321301302001.

It is an a-pointer prime, because the next prime (100203103139) can be obtained adding 100203103123 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100203103123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100203103097 and 100203103106.

It is not a weakly prime, because it can be changed into another prime (100203103423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101551561 + 50101551562.

It is an arithmetic number, because the mean of its divisors is an integer number (50101551562).

Almost surely, 2^100203103123 is an apocalyptic number.

100203103123 is a deficient number, since it is larger than the sum of its proper divisors (1).

100203103123 is an equidigital number, since it uses as much as digits as its factorization.

100203103123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 100203103123 its reverse (321301302001), we get a palindrome (421504405124).

The spelling of 100203103123 in words is "one hundred billion, two hundred three million, one hundred three thousand, one hundred twenty-three".