1218233 has 8 divisors (see below), whose sum is σ = 1278816. Its totient is φ = 1159200.

The previous prime is 1218221. The next prime is 1218247. The reversal of 1218233 is 3328121.

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

It is a cyclic number.

It is not a de Polignac number, because 1218233 - 2⁸ = 1217977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218263) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1418 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (159852).

2^1218233 is an apocalyptic number.

It is an amenable number.

1218233 is a deficient number, since it is larger than the sum of its proper divisors (60583).

1218233 is an equidigital number, since it uses as much as digits as its factorization.

1218233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

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

The square root of 1218233 is about 1103.7359285626. The cubic root of 1218233 is about 106.8013608752.

The spelling of 1218233 in words is "one million, two hundred eighteen thousand, two hundred thirty-three".