313220205 has 12 divisors (see below), whose sum is σ = 542915100. Its totient is φ = 167050752.

The previous prime is 313220191. The next prime is 313220209. The reversal of 313220205 is 502022313.

It can be written as a sum of positive squares in 2 ways, for example, as 67420521 + 245799684 = 8211^2 + 15678^2 .

It is not a de Polignac number, because 313220205 - 2¹⁶ = 313154669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313220209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3480180 + ... + 3480269.

It is an arithmetic number, because the mean of its divisors is an integer number (45242925).

Almost surely, 2^313220205 is an apocalyptic number.

It is an amenable number.

313220205 is a deficient number, since it is larger than the sum of its proper divisors (229694895).

313220205 is a wasteful number, since it uses less digits than its factorization.

313220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960460 (or 6960457 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 313220205 is about 17698.0282800090. The cubic root of 313220205 is about 679.1253207461.

Adding to 313220205 its reverse (502022313), we get a palindrome (815242518).

The spelling of 313220205 in words is "three hundred thirteen million, two hundred twenty thousand, two hundred five".