13123321103 has 4 divisors (see below), whose sum is σ = 13124519040. Its totient is φ = 13122123168.

The previous prime is 13123321093. The next prime is 13123321177. The reversal of 13123321103 is 30112332131.

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 13123321103 - 2¹² = 13123317007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123321303) 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, 582383 + ... + 604496.

It is an arithmetic number, because the mean of its divisors is an integer number (3281129760).

Almost surely, 2^13123321103 is an apocalyptic number.

13123321103 is a deficient number, since it is larger than the sum of its proper divisors (1197937).

13123321103 is a wasteful number, since it uses less digits than its factorization.

13123321103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197936.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13123321103 its reverse (30112332131), we get a palindrome (43235653234).

The spelling of 13123321103 in words is "thirteen billion, one hundred twenty-three million, three hundred twenty-one thousand, one hundred three".