13421318 has 4 divisors (see below), whose sum is σ = 20131980. Its totient is φ = 6710658.

The previous prime is 13421299. The next prime is 13421323. The reversal of 13421318 is 81312431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81312431 = 4789 ⋅16979.

It is a junction number, because it is equal to n+sod(n) for n = 13421293 and 13421302.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3355328 + ... + 3355331.

It is an arithmetic number, because the mean of its divisors is an integer number (5032995).

Almost surely, 2^13421318 is an apocalyptic number.

13421318 is a deficient number, since it is larger than the sum of its proper divisors (6710662).

13421318 is an equidigital number, since it uses as much as digits as its factorization.

13421318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710661.

The product of its digits is 576, while the sum is 23.

The square root of 13421318 is about 3663.5117032705. The cubic root of 13421318 is about 237.6466639822.

Adding to 13421318 its reverse (81312431), we get a palindrome (94733749).

The spelling of 13421318 in words is "thirteen million, four hundred twenty-one thousand, three hundred eighteen".