1231324328 has 32 divisors (see below), whose sum is σ = 2509587360. Its totient is φ = 562987200.

The previous prime is 1231324327. The next prime is 1231324337. The reversal of 1231324328 is 8234231321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231324328.

It is not an unprimeable number, because it can be changed into a prime (1231324327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44198 + ... + 66453.

It is an arithmetic number, because the mean of its divisors is an integer number (78424605).

Almost surely, 2^1231324328 is an apocalyptic number.

It is an amenable number.

1231324328 is an abundant number, since it is smaller than the sum of its proper divisors (1278263032).

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

1231324328 is a wasteful number, since it uses less digits than its factorization.

1231324328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110777 (or 110773 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 1231324328 is about 35090.2312332079. The cubic root of 1231324328 is about 1071.8256682614.

Adding to 1231324328 its reverse (8234231321), we get a palindrome (9465555649).

The spelling of 1231324328 in words is "one billion, two hundred thirty-one million, three hundred twenty-four thousand, three hundred twenty-eight".