13121333232313 has 4 divisors (see below), whose sum is σ = 13691825981568. Its totient is φ = 12550840483060.

The previous prime is 13121333232289. The next prime is 13121333232323. The reversal of 13121333232313 is 31323233312131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13121333232313 - 2³⁷ = 12983894278841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121333232323) 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, 285246374593 + ... + 285246374638.

It is an arithmetic number, because the mean of its divisors is an integer number (3422956495392).

Almost surely, 2^{13121333232313} is an apocalyptic number.

It is an amenable number.

13121333232313 is a deficient number, since it is larger than the sum of its proper divisors (570492749255).

13121333232313 is an equidigital number, since it uses as much as digits as its factorization.

13121333232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570492749254.

The product of its digits is 17496, while the sum is 31.

Adding to 13121333232313 its reverse (31323233312131), we get a palindrome (44444566544444).

The spelling of 13121333232313 in words is "thirteen trillion, one hundred twenty-one billion, three hundred thirty-three million, two hundred thirty-two thousand, three hundred thirteen".