13403344123 has 16 divisors (see below), whose sum is σ = 14517563200. Its totient is φ = 12301165440.

The previous prime is 13403344099. The next prime is 13403344159. The reversal of 13403344123 is 32144330431.

It is a cyclic number.

It is not a de Polignac number, because 13403344123 - 2¹³ = 13403335931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13403344091 and 13403344100.

It is not an unprimeable number, because it can be changed into a prime (13403354123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465218 + ... + 2470648.

It is an arithmetic number, because the mean of its divisors is an integer number (907347700).

Almost surely, 2^13403344123 is an apocalyptic number.

13403344123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13403344123 is a deficient number, since it is larger than the sum of its proper divisors (1114219077).

13403344123 is a wasteful number, since it uses less digits than its factorization.

13403344123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 13403344123 its reverse (32144330431), we get a palindrome (45547674554).

The spelling of 13403344123 in words is "thirteen billion, four hundred three million, three hundred forty-four thousand, one hundred twenty-three".