1223318 has 8 divisors (see below), whose sum is σ = 1843680. Its totient is φ = 608760.

The previous prime is 1223311. The next prime is 1223323. The reversal of 1223318 is 8133221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1223318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (230460).

2^1223318 is an apocalyptic number.

1223318 is a deficient number, since it is larger than the sum of its proper divisors (620362).

1223318 is a wasteful number, since it uses less digits than its factorization.

1223318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902.

The product of its digits is 288, while the sum is 20.

The square root of 1223318 is about 1106.0370699032. The cubic root of 1223318 is about 106.9497536816.

Adding to 1223318 its reverse (8133221), we get a palindrome (9356539).

Subtracting 1223318 from its reverse (8133221), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1223318 in words is "one million, two hundred twenty-three thousand, three hundred eighteen".