1131218 has 8 divisors (see below), whose sum is σ = 1851120. Its totient is φ = 514180.

The previous prime is 1131217. The next prime is 1131223. The reversal of 1131218 is 8121311.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1131196 and 1131205.

It is not an unprimeable number, because it can be changed into a prime (1131217) 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, 25688 + ... + 25731.

It is an arithmetic number, because the mean of its divisors is an integer number (231390).

2^1131218 is an apocalyptic number.

1131218 is a deficient number, since it is larger than the sum of its proper divisors (719902).

1131218 is a wasteful number, since it uses less digits than its factorization.

1131218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51432.

The product of its digits is 48, while the sum is 17.

The square root of 1131218 is about 1063.5873259869. The cubic root of 1131218 is about 104.1954534484.

Adding to 1131218 its reverse (8121311), we get a palindrome (9252529).

It can be divided in two parts, 113 and 1218, that added together give a palindrome (1331).

The spelling of 1131218 in words is "one million, one hundred thirty-one thousand, two hundred eighteen".