313110012221 has 8 divisors (see below), whose sum is σ = 331586099064. Its totient is φ = 294640353280.

The previous prime is 313110012203. The next prime is 313110012223. The reversal of 313110012221 is 122210011313.

It can be written as a sum of positive squares in 4 ways, for example, as 152401228996 + 160708783225 = 390386^2 + 400885^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 313110012221 - 2²² = 313105817917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313110012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313110012223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506500 + ... + 1701693.

It is an arithmetic number, because the mean of its divisors is an integer number (41448262383).

Almost surely, 2^313110012221 is an apocalyptic number.

It is an amenable number.

313110012221 is a deficient number, since it is larger than the sum of its proper divisors (18476086843).

313110012221 is a wasteful number, since it uses less digits than its factorization.

313110012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213951.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 313110012221 its reverse (122210011313), we get a palindrome (435320023534).

The spelling of 313110012221 in words is "three hundred thirteen billion, one hundred ten million, twelve thousand, two hundred twenty-one".