13133312 has 40 divisors (see below), whose sum is σ = 26589816. Its totient is φ = 6479872.

The previous prime is 13133311. The next prime is 13133321. The reversal of 13133312 is 21333131.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57743 + ... + 57969.

Almost surely, 2^13133312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13133312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13294908).

13133312 is an abundant number, since it is smaller than the sum of its proper divisors (13456504).

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

13133312 is an equidigital number, since it uses as much as digits as its factorization.

13133312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 342 counting only the distinct ones).

The product of its digits is 162, while the sum is 17.

The square root of 13133312 is about 3623.9911699672. The cubic root of 13133312 is about 235.9344833934.

Adding to 13133312 its reverse (21333131), we get a palindrome (34466443).

It can be divided in two parts, 1 and 3133312, that added together give a palindrome (3133313).

The spelling of 13133312 in words is "thirteen million, one hundred thirty-three thousand, three hundred twelve".