1323312232 has 64 divisors (see below), whose sum is σ = 2876731200. Its totient is φ = 564003840.

The previous prime is 1323312203. The next prime is 1323312233. The reversal of 1323312232 is 2322133231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1323312233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436819 + ... + 439837.

It is an arithmetic number, because the mean of its divisors is an integer number (44948925).

Almost surely, 2^1323312232 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 1323312232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438365600).

1323312232 is an abundant number, since it is smaller than the sum of its proper divisors (1553418968).

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

1323312232 is a wasteful number, since it uses less digits than its factorization.

1323312232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346 (or 3342 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 1323312232 is about 36377.3587826274. The cubic root of 1323312232 is about 1097.8780669351.

Adding to 1323312232 its reverse (2322133231), we get a palindrome (3645445463).

The spelling of 1323312232 in words is "one billion, three hundred twenty-three million, three hundred twelve thousand, two hundred thirty-two".