100123110823 has 2 divisors, whose sum is σ = 100123110824. Its totient is φ = 100123110822.

The previous prime is 100123110817. The next prime is 100123110881. The reversal of 100123110823 is 328011321001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100123110823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100123110794 and 100123110803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100123210823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061555411 + 50061555412.

It is an arithmetic number, because the mean of its divisors is an integer number (50061555412).

Almost surely, 2^100123110823 is an apocalyptic number.

100123110823 is a deficient number, since it is larger than the sum of its proper divisors (1).

100123110823 is an equidigital number, since it uses as much as digits as its factorization.

100123110823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 100123110823 its reverse (328011321001), we get a palindrome (428134431824).

The spelling of 100123110823 in words is "one hundred billion, one hundred twenty-three million, one hundred ten thousand, eight hundred twenty-three".