13103020123 has 4 divisors (see below), whose sum is σ = 13457155840. Its totient is φ = 12748884408.

The previous prime is 13103020093. The next prime is 13103020127. The reversal of 13103020123 is 32102030131.

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 13103020123 - 2²¹ = 13100922971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13103020097 and 13103020106.

It is not an unprimeable number, because it can be changed into a prime (13103020127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177067803 + ... + 177067876.

It is an arithmetic number, because the mean of its divisors is an integer number (3364288960).

Almost surely, 2^13103020123 is an apocalyptic number.

13103020123 is a deficient number, since it is larger than the sum of its proper divisors (354135717).

13103020123 is an equidigital number, since it uses as much as digits as its factorization.

13103020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354135716.

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

Adding to 13103020123 its reverse (32102030131), we get a palindrome (45205050254).

The spelling of 13103020123 in words is "thirteen billion, one hundred three million, twenty thousand, one hundred twenty-three".