11312238 has 48 divisors (see below), whose sum is σ = 26634960. Its totient is φ = 3193344.

The previous prime is 11312221. The next prime is 11312261. The reversal of 11312238 is 83221311.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31870 + ... + 32222.

It is an arithmetic number, because the mean of its divisors is an integer number (554895).

Almost surely, 2^11312238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11312238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13317480).

11312238 is an abundant number, since it is smaller than the sum of its proper divisors (15322722).

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

11312238 is a wasteful number, since it uses less digits than its factorization.

11312238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 474 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 11312238 is about 3363.3670629296. The cubic root of 11312238 is about 224.4826831086.

Adding to 11312238 its reverse (83221311), we get a palindrome (94533549).

The spelling of 11312238 in words is "eleven million, three hundred twelve thousand, two hundred thirty-eight".