13113312 has 48 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 4180352.

The previous prime is 13113301. The next prime is 13113319. The reversal of 13113312 is 21331131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13113291 and 13113300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113319) 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, 762 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^13113312 is an apocalyptic number.

13113312 is a gapful number since it is divisible by the number (12) 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 13113312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17962560).

13113312 is an abundant number, since it is smaller than the sum of its proper divisors (22811808).

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

13113312 is a wasteful number, since it uses less digits than its factorization.

13113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975 (or 5967 counting only the distinct ones).

The product of its digits is 54, while the sum is 15.

The square root of 13113312 is about 3621.2307300143. The cubic root of 13113312 is about 235.8146586563.

Adding to 13113312 its reverse (21331131), we get a palindrome (34444443).

The spelling of 13113312 in words is "thirteen million, one hundred thirteen thousand, three hundred twelve".