1310113221321 has 4 divisors (see below), whose sum is σ = 1746817628432. Its totient is φ = 873408814212.

The previous prime is 1310113221229. The next prime is 1310113221323. The reversal of 1310113221321 is 1231223110131.

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 de Polignac number, because none of the positive numbers 2^k-1310113221321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310113221323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218352203551 + ... + 218352203556.

It is an arithmetic number, because the mean of its divisors is an integer number (436704407108).

Almost surely, 2^{1310113221321} is an apocalyptic number.

It is an amenable number.

1310113221321 is a deficient number, since it is larger than the sum of its proper divisors (436704407111).

1310113221321 is an equidigital number, since it uses as much as digits as its factorization.

1310113221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436704407110.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1310113221321 its reverse (1231223110131), we get a palindrome (2541336331452).

The spelling of 1310113221321 in words is "one trillion, three hundred ten billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred twenty-one".