11313213444 has 144 divisors (see below), whose sum is σ = 31437020160. Its totient is φ = 3409274880.

The previous prime is 11313213437. The next prime is 11313213487. The reversal of 11313213444 is 44431231311.

11313213444 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 3 + 213 + 444 = 666.

It is a super-2 number, since 2×11313213444² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5988052 + ... + 5989940.

It is an arithmetic number, because the mean of its divisors is an integer number (218312640).

Almost surely, 2^11313213444 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 11313213444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15718510080).

11313213444 is an abundant number, since it is smaller than the sum of its proper divisors (20123806716).

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

11313213444 is a wasteful number, since it uses less digits than its factorization.

11313213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170 (or 2165 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 11313213444 its reverse (44431231311), we get a palindrome (55744444755).

The spelling of 11313213444 in words is "eleven billion, three hundred thirteen million, two hundred thirteen thousand, four hundred forty-four".