13057318 has 4 divisors (see below), whose sum is σ = 19585980. Its totient is φ = 6528658.

The previous prime is 13057277. The next prime is 13057321. The reversal of 13057318 is 81375031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81375031 = 31 ⋅2625001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3264328 + ... + 3264331.

It is an arithmetic number, because the mean of its divisors is an integer number (4896495).

Almost surely, 2^13057318 is an apocalyptic number.

13057318 is a deficient number, since it is larger than the sum of its proper divisors (6528662).

13057318 is an equidigital number, since it uses as much as digits as its factorization.

13057318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528661.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13057318 is about 3613.4911097165. The cubic root of 13057318 is about 235.4785359756.

The spelling of 13057318 in words is "thirteen million, fifty-seven thousand, three hundred eighteen".