11312118 has 24 divisors (see below), whose sum is σ = 24586848. Its totient is φ = 3758832.

The previous prime is 11312111. The next prime is 11312177. The reversal of 11312118 is 81121311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 11312118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6355 + ... + 7937.

It is an arithmetic number, because the mean of its divisors is an integer number (1024452).

Almost surely, 2^11312118 is an apocalyptic number.

11312118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11312118 is an abundant number, since it is smaller than the sum of its proper divisors (13274730).

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

11312118 is a wasteful number, since it uses less digits than its factorization.

11312118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1985 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 11312118 is about 3363.3492236162. The cubic root of 11312118 is about 224.4818893365.

Adding to 11312118 its reverse (81121311), we get a palindrome (92433429).

It can be divided in two parts, 1131 and 2118, that added together give a square (3249 = 57²).

The spelling of 11312118 in words is "eleven million, three hundred twelve thousand, one hundred eighteen".