11218312 has 32 divisors (see below), whose sum is σ = 24206400. Its totient is φ = 4774464.

The previous prime is 11218267. The next prime is 11218343. The reversal of 11218312 is 21381211.

It is a self number, because there is not a number n which added to its sum of digits gives 11218312.

It is a congruent number.

It is an unprimeable number.

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, 8514 + ... + 9742.

It is an arithmetic number, because the mean of its divisors is an integer number (756450).

Almost surely, 2^11218312 is an apocalyptic number.

It is an amenable number.

11218312 is an abundant number, since it is smaller than the sum of its proper divisors (12988088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11218312 is a wasteful number, since it uses less digits than its factorization.

11218312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1401 counting only the distinct ones).

The product of its digits is 96, while the sum is 19.

The square root of 11218312 is about 3349.3748670461. The cubic root of 11218312 is about 223.8596591155.

Adding to 11218312 its reverse (21381211), we get a palindrome (32599523).

The spelling of 11218312 in words is "eleven million, two hundred eighteen thousand, three hundred twelve".