11131223320 has 64 divisors (see below), whose sum is σ = 29546496000. Its totient is φ = 3693306240.

The previous prime is 11131223269. The next prime is 11131223371. The reversal of 11131223320 is 2332213111.

It is an interprime number because it is at equal distance from previous prime (11131223269) and next prime (11131223371).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632520 + ... + 649879.

It is an arithmetic number, because the mean of its divisors is an integer number (461664000).

Almost surely, 2^11131223320 is an apocalyptic number.

11131223320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131223320 is an abundant number, since it is smaller than the sum of its proper divisors (18415272680).

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

11131223320 is a wasteful number, since it uses less digits than its factorization.

11131223320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282448 (or 1282444 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11131223320 its reverse (2332213111), we get a palindrome (13463436431).

The spelling of 11131223320 in words is "eleven billion, one hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty".