11321320 has 32 divisors (see below), whose sum is σ = 26973000. Its totient is φ = 4261888.

The previous prime is 11321291. The next prime is 11321327. The reversal of 11321320 is 2312311.

11321320 = T₃₇₃ + T₃₇₄ + ... + T₄₉₂.

It can be written as a sum of positive squares in 4 ways, for example, as 10982596 + 338724 = 3314^2 + 582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11321320.

It is not an unprimeable number, because it can be changed into a prime (11321327) 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, 7645 + ... + 9004.

Almost surely, 2^11321320 is an apocalyptic number.

11321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321320 is an abundant number, since it is smaller than the sum of its proper divisors (15651680).

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

11321320 is a wasteful number, since it uses less digits than its factorization.

11321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16677 (or 16673 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11321320 is about 3364.7169271723. The cubic root of 11321320 is about 224.5427421459.

Adding to 11321320 its reverse (2312311), we get a palindrome (13633631).

Subtracting from 11321320 its reverse (2312311), we obtain a palindrome (9009009).

The spelling of 11321320 in words is "eleven million, three hundred twenty-one thousand, three hundred twenty".