11131120320 has 56 divisors (see below), whose sum is σ = 35341310064. Its totient is φ = 2968298496.

The previous prime is 11131120279. The next prime is 11131120321. The reversal of 11131120320 is 2302113111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11131120320.

It is not an unprimeable number, because it can be changed into a prime (11131120321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5796499 + ... + 5798418.

Almost surely, 2^11131120320 is an apocalyptic number.

11131120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131120320 is an abundant number, since it is smaller than the sum of its proper divisors (24210189744).

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

11131120320 is a wasteful number, since it uses less digits than its factorization.

11131120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11594937 (or 11594927 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11131120320 its reverse (2302113111), we get a palindrome (13433233431).

The spelling of 11131120320 in words is "eleven billion, one hundred thirty-one million, one hundred twenty thousand, three hundred twenty".