11313320440 has 64 divisors (see below), whose sum is σ = 25969701600. Its totient is φ = 4434726912.

The previous prime is 11313320419. The next prime is 11313320441. The reversal of 11313320440 is 4402331311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313320441) 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, 388219 + ... + 416341.

Almost surely, 2^11313320440 is an apocalyptic number.

11313320440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11313320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12984850800).

11313320440 is an abundant number, since it is smaller than the sum of its proper divisors (14656381160).

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

11313320440 is a wasteful number, since it uses less digits than its factorization.

11313320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28336 (or 28332 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 11313320440 its reverse (4402331311), we get a palindrome (15715651751).

The spelling of 11313320440 in words is "eleven billion, three hundred thirteen million, three hundred twenty thousand, four hundred forty".