13120503423 has 16 divisors (see below), whose sum is σ = 18589002336. Its totient is φ = 8203166720.

The previous prime is 13120503421. The next prime is 13120503467. The reversal of 13120503423 is 32430502131.

It is a cyclic number.

It is not a de Polignac number, because 13120503423 - 2¹ = 13120503421 is a prime.

It is a super-2 number, since 2×13120503423² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13120503393 and 13120503402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120503421) 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, 443436 + ... + 472097.

It is an arithmetic number, because the mean of its divisors is an integer number (1161812646).

Almost surely, 2^13120503423 is an apocalyptic number.

13120503423 is a deficient number, since it is larger than the sum of its proper divisors (5468498913).

13120503423 is a wasteful number, since it uses less digits than its factorization.

13120503423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915834.

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 13120503423 in words is "thirteen billion, one hundred twenty million, five hundred three thousand, four hundred twenty-three".