1218323 has 4 divisors (see below), whose sum is σ = 1221888. Its totient is φ = 1214760.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218323 is 3238121.

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

It is a cyclic number.

It is not a de Polignac number, because 1218323 - 2⁴ = 1218307 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1218295 and 1218304.

It is not an unprimeable number, because it can be changed into a prime (1218313) 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, 1208 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (305472).

2^1218323 is an apocalyptic number.

1218323 is a deficient number, since it is larger than the sum of its proper divisors (3565).

1218323 is an equidigital number, since it uses as much as digits as its factorization.

1218323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564.

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

The square root of 1218323 is about 1103.7766984313. The cubic root of 1218323 is about 106.8039908827.

The spelling of 1218323 in words is "one million, two hundred eighteen thousand, three hundred twenty-three".