1323435011523 has 4 divisors (see below), whose sum is σ = 1764580015368. Its totient is φ = 882290007680.

The previous prime is 1323435011447. The next prime is 1323435011533. The reversal of 1323435011523 is 3251105343231.

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-1323435011523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323435011533) 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, 220572501918 + ... + 220572501923.

It is an arithmetic number, because the mean of its divisors is an integer number (441145003842).

Almost surely, 2^{1323435011523} is an apocalyptic number.

1323435011523 is a deficient number, since it is larger than the sum of its proper divisors (441145003845).

1323435011523 is an equidigital number, since it uses as much as digits as its factorization.

1323435011523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441145003844.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 1323435011523 in words is "one trillion, three hundred twenty-three billion, four hundred thirty-five million, eleven thousand, five hundred twenty-three".