13118377 has 4 divisors (see below), whose sum is σ = 13253716. Its totient is φ = 12983040.

The previous prime is 13118317. The next prime is 13118383. The reversal of 13118377 is 77381131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77381131 = 23 ⋅3364397.

It can be written as a sum of positive squares in 2 ways, for example, as 7901721 + 5216656 = 2811^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 13118377 - 2⁷ = 13118249 is a prime.

It is a super-2 number, since 2×13118377² = 344183630228258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13118317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67524 + ... + 67717.

It is an arithmetic number, because the mean of its divisors is an integer number (3313429).

Almost surely, 2^13118377 is an apocalyptic number.

It is an amenable number.

13118377 is a deficient number, since it is larger than the sum of its proper divisors (135339).

13118377 is an equidigital number, since it uses as much as digits as its factorization.

13118377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135338.

The product of its digits is 3528, while the sum is 31.

The square root of 13118377 is about 3621.9300103674. The cubic root of 13118377 is about 235.8450157850.

The spelling of 13118377 in words is "thirteen million, one hundred eighteen thousand, three hundred seventy-seven".