1213318 has 4 divisors (see below), whose sum is σ = 1819980. Its totient is φ = 606658.

The previous prime is 1213301. The next prime is 1213327. The reversal of 1213318 is 8133121.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1213295 and 1213304.

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, 303328 + ... + 303331.

It is an arithmetic number, because the mean of its divisors is an integer number (454995).

2^1213318 is an apocalyptic number.

1213318 is a deficient number, since it is larger than the sum of its proper divisors (606662).

1213318 is an equidigital number, since it uses as much as digits as its factorization.

1213318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606661.

The product of its digits is 144, while the sum is 19.

The square root of 1213318 is about 1101.5071493186. The cubic root of 1213318 is about 106.6575361108.

Adding to 1213318 its reverse (8133121), we get a palindrome (9346439).

The spelling of 1213318 in words is "one million, two hundred thirteen thousand, three hundred eighteen".