1323220323431 has 8 divisors (see below), whose sum is σ = 1345840524240. Its totient is φ = 1300606547328.

The previous prime is 1323220323427. The next prime is 1323220323533. The reversal of 1323220323431 is 1343230223231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323220323431 - 2² = 1323220323427 is a prime.

It is a super-2 number, since 2×1323220323431² (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 = 1323220323394 and 1323220323403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323220326431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189826 + ... + 2015471.

It is an arithmetic number, because the mean of its divisors is an integer number (168230065530).

Almost surely, 2^{1323220323431} is an apocalyptic number.

1323220323431 is a deficient number, since it is larger than the sum of its proper divisors (22620200809).

1323220323431 is an equidigital number, since it uses as much as digits as its factorization.

1323220323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212353.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 1323220323431 its reverse (1343230223231), we get a palindrome (2666450546662).

The spelling of 1323220323431 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, three hundred twenty-three thousand, four hundred thirty-one".