1323131320113 has 16 divisors (see below), whose sum is σ = 1811889832896. Its totient is φ = 858231080640.

The previous prime is 1323131320111. The next prime is 1323131320139. The reversal of 1323131320113 is 3110231313231.

It is not a de Polignac number, because 1323131320113 - 2¹ = 1323131320111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1323131320111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9259870 + ... + 9401672.

It is an arithmetic number, because the mean of its divisors is an integer number (113243114556).

Almost surely, 2^{1323131320113} is an apocalyptic number.

It is an amenable number.

1323131320113 is a deficient number, since it is larger than the sum of its proper divisors (488758512783).

1323131320113 is a wasteful number, since it uses less digits than its factorization.

1323131320113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225904.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1323131320113 its reverse (3110231313231), we get a palindrome (4433362633344).

The spelling of 1323131320113 in words is "one trillion, three hundred twenty-three billion, one hundred thirty-one million, three hundred twenty thousand, one hundred thirteen".