313133020221 has 16 divisors (see below), whose sum is σ = 477591668864. Its totient is φ = 178769433024.

The previous prime is 313133020219. The next prime is 313133020231. The reversal of 313133020221 is 122020331313.

It is not a de Polignac number, because 313133020221 - 2¹ = 313133020219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313133020201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6798226 + ... + 6844131.

It is an arithmetic number, because the mean of its divisors is an integer number (29849479304).

Almost surely, 2^313133020221 is an apocalyptic number.

It is an amenable number.

313133020221 is a deficient number, since it is larger than the sum of its proper divisors (164458648643).

313133020221 is a wasteful number, since it uses less digits than its factorization.

313133020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13643460.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 313133020221 its reverse (122020331313), we get a palindrome (435153351534).

The spelling of 313133020221 in words is "three hundred thirteen billion, one hundred thirty-three million, twenty thousand, two hundred twenty-one".