1323103231 has 2 divisors, whose sum is σ = 1323103232. Its totient is φ = 1323103230.

The previous prime is 1323103211. The next prime is 1323103259. The reversal of 1323103231 is 1323013231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323103231 is a prime.

It is a super-2 number, since 2×1323103231² = 3501204319765278722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323103199 and 1323103208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323103211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661551615 + 661551616.

It is an arithmetic number, because the mean of its divisors is an integer number (661551616).

Almost surely, 2^1323103231 is an apocalyptic number.

1323103231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323103231 is an equidigital number, since it uses as much as digits as its factorization.

1323103231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1323103231 is about 36374.4859894954. The cubic root of 1323103231 is about 1097.8202650827.

Adding to 1323103231 its reverse (1323013231), we get a palindrome (2646116462).

Subtracting from 1323103231 its reverse (1323013231), we obtain a square (90000 = 300²).

The spelling of 1323103231 in words is "one billion, three hundred twenty-three million, one hundred three thousand, two hundred thirty-one".