123345113603 has 4 divisors (see below), whose sum is σ = 126678765360. Its totient is φ = 120011461848.

The previous prime is 123345113599. The next prime is 123345113641. The reversal of 123345113603 is 306311543321.

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 123345113603 - 2² = 123345113599 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 123345113603.

It is not an unprimeable number, because it can be changed into a prime (123345113303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666825823 + ... + 1666825896.

It is an arithmetic number, because the mean of its divisors is an integer number (31669691340).

Almost surely, 2^123345113603 is an apocalyptic number.

123345113603 is a deficient number, since it is larger than the sum of its proper divisors (3333651757).

123345113603 is an equidigital number, since it uses as much as digits as its factorization.

123345113603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333651756.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 123345113603 its reverse (306311543321), we get a palindrome (429656656924).

The spelling of 123345113603 in words is "one hundred twenty-three billion, three hundred forty-five million, one hundred thirteen thousand, six hundred three".