11312320 has 112 divisors (see below), whose sum is σ = 29626560. Its totient is φ = 4100096.

The previous prime is 11312281. The next prime is 11312333. The reversal of 11312320 is 2321311.

It is a self number, because there is not a number n which added to its sum of digits gives 11312320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213414 + ... + 213466.

Almost surely, 2^11312320 is an apocalyptic number.

11312320 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 11312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14813280).

11312320 is an abundant number, since it is smaller than the sum of its proper divisors (18314240).

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

11312320 is a wasteful number, since it uses less digits than its factorization.

11312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

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

The square root of 11312320 is about 3363.3792530727. The cubic root of 11312320 is about 224.4832255164.

Adding to 11312320 its reverse (2321311), we get a palindrome (13633631).

The spelling of 11312320 in words is "eleven million, three hundred twelve thousand, three hundred twenty".