1323221230231 has 4 divisors (see below), whose sum is σ = 1326907083600. Its totient is φ = 1319535376864.

The previous prime is 1323221230223. The next prime is 1323221230237. The reversal of 1323221230231 is 1320321223231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323221230231 - 2³ = 1323221230223 is a prime.

It is a super-2 number, since 2×1323221230231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323221230196 and 1323221230205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323221230237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842926146 + ... + 1842926863.

It is an arithmetic number, because the mean of its divisors is an integer number (331726770900).

Almost surely, 2^{1323221230231} is an apocalyptic number.

1323221230231 is a deficient number, since it is larger than the sum of its proper divisors (3685853369).

1323221230231 is an equidigital number, since it uses as much as digits as its factorization.

1323221230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685853368.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1323221230231 its reverse (1320321223231), we get a palindrome (2643542453462).

The spelling of 1323221230231 in words is "one trillion, three hundred twenty-three billion, two hundred twenty-one million, two hundred thirty thousand, two hundred thirty-one".