1312323232 has 48 divisors (see below), whose sum is σ = 2823714432. Its totient is φ = 595409920.

The previous prime is 1312323223. The next prime is 1312323239. The reversal of 1312323232 is 2323232131.

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

1312323232 is a modest number, since divided by 323232 gives 1312 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1312323239) 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, 205593 + ... + 211879.

It is an arithmetic number, because the mean of its divisors is an integer number (58827384).

Almost surely, 2^1312323232 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 1312323232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411857216).

1312323232 is an abundant number, since it is smaller than the sum of its proper divisors (1511391200).

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

1312323232 is a wasteful number, since it uses less digits than its factorization.

1312323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901 (or 6893 counting only the distinct ones).

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

The square root of 1312323232 is about 36226.0021531496. The cubic root of 1312323232 is about 1094.8306298230.

Adding to 1312323232 its reverse (2323232131), we get a palindrome (3635555363).

The spelling of 1312323232 in words is "one billion, three hundred twelve million, three hundred twenty-three thousand, two hundred thirty-two".