13313232 has 60 divisors (see below), whose sum is σ = 37914240. Its totient is φ = 4359744.

The previous prime is 13313221. The next prime is 13313257. The reversal of 13313232 is 23231331.

It is a super-3 number, since 3×13313232³ (a number of 22 digits) contains 333 as substring.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7713 + ... + 9279.

It is an arithmetic number, because the mean of its divisors is an integer number (631904).

Almost surely, 2^13313232 is an apocalyptic number.

13313232 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 13313232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18957120).

13313232 is an abundant number, since it is smaller than the sum of its proper divisors (24601008).

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

13313232 is a wasteful number, since it uses less digits than its factorization.

13313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1631 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 13313232 is about 3648.7301900798. The cubic root of 13313232 is about 237.0069965354.

Adding to 13313232 its reverse (23231331), we get a palindrome (36544563).

The spelling of 13313232 in words is "thirteen million, three hundred thirteen thousand, two hundred thirty-two".