1323131232 has 48 divisors (see below), whose sum is σ = 3476738160. Its totient is φ = 440596992.

The previous prime is 1323131207. The next prime is 1323131237. The reversal of 1323131232 is 2321313231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1323131199 and 1323131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323131237) 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, 96178 + ... + 109070.

It is an arithmetic number, because the mean of its divisors is an integer number (72432045).

Almost surely, 2^1323131232 is an apocalyptic number.

1323131232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323131232 is an abundant number, since it is smaller than the sum of its proper divisors (2153606928).

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

1323131232 is a wasteful number, since it uses less digits than its factorization.

1323131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13975 (or 13967 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1323131232 is about 36374.8708863688. The cubic root of 1323131232 is about 1097.8280094642.

Adding to 1323131232 its reverse (2321313231), we get a palindrome (3644444463).

The spelling of 1323131232 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-two".