12913118 has 4 divisors (see below), whose sum is σ = 19369680. Its totient is φ = 6456558.

The previous prime is 12913039. The next prime is 12913123. The reversal of 12913118 is 81131921.

12913118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81131921 = 13 ⋅6240917.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228278 + ... + 3228281.

It is an arithmetic number, because the mean of its divisors is an integer number (4842420).

Almost surely, 2^12913118 is an apocalyptic number.

12913118 is a deficient number, since it is larger than the sum of its proper divisors (6456562).

12913118 is an equidigital number, since it uses as much as digits as its factorization.

12913118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456561.

The product of its digits is 432, while the sum is 26.

The square root of 12913118 is about 3593.4827117992. The cubic root of 12913118 is about 234.6084804120.

It can be divided in two parts, 12913 and 118, that added together give a palindrome (13031).

The spelling of 12913118 in words is "twelve million, nine hundred thirteen thousand, one hundred eighteen".