1111320 has 160 divisors (see below), whose sum is σ = 4356000. Its totient is φ = 254016.

The previous prime is 1111301. The next prime is 1111333. The reversal of 1111320 is 231111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 158757 + ... + 158763.

It is an arithmetic number, because the mean of its divisors is an integer number (27225).

2^1111320 is an apocalyptic number.

1111320 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 1111320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178000).

1111320 is an abundant number, since it is smaller than the sum of its proper divisors (3244680).

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

1111320 is an equidigital number, since it uses as much as digits as its factorization.

1111320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1111320 is about 1054.1916334329. The cubic root of 1111320 is about 103.5809071219.

Adding to 1111320 its reverse (231111), we get a palindrome (1342431).

It can be divided in two parts, 1111 and 320, that added together give a triangular number (1431 = T₅₃).

The spelling of 1111320 in words is "one million, one hundred eleven thousand, three hundred twenty".