1323443231 has 16 divisors (see below), whose sum is σ = 1484088480. Its totient is φ = 1169925120.

The previous prime is 1323443201. The next prime is 1323443237.

1323443231 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1323443231 - 2⁶ = 1323443167 is a prime.

It is a super-2 number, since 2×1323443231² = 3503003971359438722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323443231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323443237) 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, 55835 + ... + 75923.

It is an arithmetic number, because the mean of its divisors is an integer number (92755530).

Almost surely, 2^1323443231 is an apocalyptic number.

1323443231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1323443231 is a deficient number, since it is larger than the sum of its proper divisors (160645249).

1323443231 is a wasteful number, since it uses less digits than its factorization.

1323443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20266.

The product of its digits is 5184, while the sum is 26.

The square root of 1323443231 is about 36379.1592948490. The cubic root of 1323443231 is about 1097.9142932516.

It can be divided in two parts, 13234 and 43231, that added together give a palindrome (56465).

The spelling of 1323443231 in words is "one billion, three hundred twenty-three million, four hundred forty-three thousand, two hundred thirty-one".