13231332 has 36 divisors (see below), whose sum is σ = 33673276. Its totient is φ = 4380480.

The previous prime is 13231331. The next prime is 13231333. The reversal of 13231332 is 23313231.

13231332 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13231331) and next prime (13231333).

It can be written as a sum of positive squares in 2 ways, for example, as 6230016 + 7001316 = 2496^2 + 2646^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 not an unprimeable number, because it can be changed into a prime (13231331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4482 + ... + 6822.

Almost surely, 2^13231332 is an apocalyptic number.

13231332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13231332 is an abundant number, since it is smaller than the sum of its proper divisors (20441944).

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

13231332 is a wasteful number, since it uses less digits than its factorization.

13231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2503 counting only the distinct ones).

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

The square root of 13231332 is about 3637.4897938001. The cubic root of 13231332 is about 236.5199919928.

Adding to 13231332 its reverse (23313231), we get a palindrome (36544563).

The spelling of 13231332 in words is "thirteen million, two hundred thirty-one thousand, three hundred thirty-two".