2113330431321 has 24 divisors (see below), whose sum is σ = 3159756479880. Its totient is φ = 1359483422976.

The previous prime is 2113330431313. The next prime is 2113330431323. The reversal of 2113330431321 is 1231340333112.

2113330431321 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 3 + 304 + 31 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 63637125696 + 2049693305625 = 252264^2 + 1431675^2 .

It is not a de Polignac number, because 2113330431321 - 2³ = 2113330431313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2113330431323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2010810 + ... + 2875763.

It is an arithmetic number, because the mean of its divisors is an integer number (131656519995).

Almost surely, 2^{2113330431321} is an apocalyptic number.

It is an amenable number.

2113330431321 is a deficient number, since it is larger than the sum of its proper divisors (1046426048559).

2113330431321 is a wasteful number, since it uses less digits than its factorization.

2113330431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888265 (or 4888262 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 2113330431321 its reverse (1231340333112), we get a palindrome (3344670764433).

The spelling of 2113330431321 in words is "two trillion, one hundred thirteen billion, three hundred thirty million, four hundred thirty-one thousand, three hundred twenty-one".