11111323344 has 80 divisors (see below), whose sum is σ = 31345089024. Its totient is φ = 3363696000.

The previous prime is 11111323343. The next prime is 11111323351. The reversal of 11111323344 is 44332311111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111323343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544917 + ... + 564939.

Almost surely, 2^11111323344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111323344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15672544512).

11111323344 is an abundant number, since it is smaller than the sum of its proper divisors (20233765680).

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

11111323344 is a wasteful number, since it uses less digits than its factorization.

11111323344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21096 (or 21090 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 11111323344 its reverse (44332311111), we get a palindrome (55443634455).

The spelling of 11111323344 in words is "eleven billion, one hundred eleven million, three hundred twenty-three thousand, three hundred forty-four".