313021221113 has 4 divisors (see below), whose sum is σ = 313893146880. Its totient is φ = 312149295348.

The previous prime is 313021221067. The next prime is 313021221167. The reversal of 313021221113 is 311122120313.

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 313021221113 - 2⁶ = 313021221049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (313021223113) 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, 435962345 + ... + 435963062.

It is an arithmetic number, because the mean of its divisors is an integer number (78473286720).

Almost surely, 2^313021221113 is an apocalyptic number.

It is an amenable number.

313021221113 is a deficient number, since it is larger than the sum of its proper divisors (871925767).

313021221113 is an equidigital number, since it uses as much as digits as its factorization.

313021221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871925766.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 313021221113 its reverse (311122120313), we get a palindrome (624143341426).

The spelling of 313021221113 in words is "three hundred thirteen billion, twenty-one million, two hundred twenty-one thousand, one hundred thirteen".