13120423113 has 12 divisors (see below), whose sum is σ = 20350044240. Its totient is φ = 7497384552.

The previous prime is 13120423111. The next prime is 13120423123. The reversal of 13120423113 is 31132402131.

It is not a de Polignac number, because 13120423113 - 2¹ = 13120423111 is a prime.

It is a super-2 number, since 2×13120423113² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13120423113.

It is not an unprimeable number, because it can be changed into a prime (13120423111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44627143 + ... + 44627436.

It is an arithmetic number, because the mean of its divisors is an integer number (1695837020).

Almost surely, 2^13120423113 is an apocalyptic number.

It is an amenable number.

13120423113 is a deficient number, since it is larger than the sum of its proper divisors (7229621127).

13120423113 is an equidigital number, since it uses as much as digits as its factorization.

13120423113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89254596 (or 89254589 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13120423113 its reverse (31132402131), we get a palindrome (44252825244).

The spelling of 13120423113 in words is "thirteen billion, one hundred twenty million, four hundred twenty-three thousand, one hundred thirteen".