11317320 has 160 divisors (see below), whose sum is σ = 43560000. Its totient is φ = 2581632.

The previous prime is 11317309. The next prime is 11317363. The reversal of 11317320 is 2371311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11317293 and 11317302.

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, 22431 + ... + 22929.

It is an arithmetic number, because the mean of its divisors is an integer number (272250).

Almost surely, 2^11317320 is an apocalyptic number.

11317320 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 11317320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21780000).

11317320 is an abundant number, since it is smaller than the sum of its proper divisors (32242680).

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

11317320 is a wasteful number, since it uses less digits than its factorization.

11317320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 11317320 is about 3364.1224710168. The cubic root of 11317320 is about 224.5162942061.

Adding to 11317320 its reverse (2371311), we get a palindrome (13688631).

The spelling of 11317320 in words is "eleven million, three hundred seventeen thousand, three hundred twenty".