1323443135345 has 4 divisors (see below), whose sum is σ = 1588131762420. Its totient is φ = 1058754508272.

The previous prime is 1323443135291. The next prime is 1323443135353. The reversal of 1323443135345 is 5435313443231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 255012880144 + 1068430255201 = 504988^2 + 1033649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323443135345 - 2⁸ = 1323443135089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132344313530 + ... + 132344313539.

It is an arithmetic number, because the mean of its divisors is an integer number (397032940605).

Almost surely, 2^{1323443135345} is an apocalyptic number.

It is an amenable number.

1323443135345 is a deficient number, since it is larger than the sum of its proper divisors (264688627075).

1323443135345 is an equidigital number, since it uses as much as digits as its factorization.

1323443135345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264688627074.

The product of its digits is 777600, while the sum is 41.

Adding to 1323443135345 its reverse (5435313443231), we get a palindrome (6758756578576).

The spelling of 1323443135345 in words is "one trillion, three hundred twenty-three billion, four hundred forty-three million, one hundred thirty-five thousand, three hundred forty-five".