11111320 has 32 divisors (see below), whose sum is σ = 27274320. Its totient is φ = 4040320.

The previous prime is 11111311. The next prime is 11111327. The reversal of 11111320 is 2311111.

It is a super-2 number, since 2×11111320² = 246922864284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11111297 and 11111306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12187 + ... + 13066.

Almost surely, 2^11111320 is an apocalyptic number.

11111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111320 is an abundant number, since it is smaller than the sum of its proper divisors (16163000).

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

11111320 is a wasteful number, since it uses less digits than its factorization.

11111320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275 (or 25271 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 11111320 is about 3333.3646665194. The cubic root of 11111320 is about 223.1457150563.

Adding to 11111320 its reverse (2311111), we get a palindrome (13422431).

The spelling of 11111320 in words is "eleven million, one hundred eleven thousand, three hundred twenty".