123100344403 has 4 divisors (see below), whose sum is σ = 123156123840. Its totient is φ = 123044564968.

The previous prime is 123100344317. The next prime is 123100344407. The reversal of 123100344403 is 304443001321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304443001321 = 19 ⋅16023315859.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123100344403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123100344407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27886408 + ... + 27890821.

It is an arithmetic number, because the mean of its divisors is an integer number (30789030960).

Almost surely, 2^123100344403 is an apocalyptic number.

123100344403 is a deficient number, since it is larger than the sum of its proper divisors (55779437).

123100344403 is an equidigital number, since it uses as much as digits as its factorization.

123100344403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55779436.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123100344403 its reverse (304443001321), we get a palindrome (427543345724).

The spelling of 123100344403 in words is "one hundred twenty-three billion, one hundred million, three hundred forty-four thousand, four hundred three".