313311780221 has 8 divisors (see below), whose sum is σ = 341801152704. Its totient is φ = 284823488320.

The previous prime is 313311780203. The next prime is 313311780227. The reversal of 313311780221 is 122087113313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313311780221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313311780227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410741 + ... + 891813.

It is an arithmetic number, because the mean of its divisors is an integer number (42725144088).

Almost surely, 2^313311780221 is an apocalyptic number.

It is an amenable number.

313311780221 is a deficient number, since it is larger than the sum of its proper divisors (28489372483).

313311780221 is a wasteful number, since it uses less digits than its factorization.

313311780221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540291.

The product of its (nonzero) digits is 6048, while the sum is 32.

Adding to 313311780221 its reverse (122087113313), we get a palindrome (435398893534).

The spelling of 313311780221 in words is "three hundred thirteen billion, three hundred eleven million, seven hundred eighty thousand, two hundred twenty-one".