1323041133523 has 4 divisors (see below), whose sum is σ = 1323100508968. Its totient is φ = 1322981758080.

The previous prime is 1323041133509. The next prime is 1323041133593. The reversal of 1323041133523 is 3253311403231.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323041133523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323041133593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29654286 + ... + 29698867.

It is an arithmetic number, because the mean of its divisors is an integer number (330775127242).

Almost surely, 2^{1323041133523} is an apocalyptic number.

1323041133523 is a deficient number, since it is larger than the sum of its proper divisors (59375445).

1323041133523 is an equidigital number, since it uses as much as digits as its factorization.

1323041133523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59375444.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 1323041133523 its reverse (3253311403231), we get a palindrome (4576352536754).

The spelling of 1323041133523 in words is "one trillion, three hundred twenty-three billion, forty-one million, one hundred thirty-three thousand, five hundred twenty-three".