201930313 has 16 divisors (see below), whose sum is σ = 222642000. Its totient is φ = 182004480.

The previous prime is 201930299. The next prime is 201930329. The reversal of 201930313 is 313039102.

It can be written as a sum of positive squares in 8 ways, for example, as 120714169 + 81216144 = 10987^2 + 9012^2 .

It is not a de Polignac number, because 201930313 - 2²⁵ = 168375881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201930013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117303 + ... + 119011.

It is an arithmetic number, because the mean of its divisors is an integer number (13915125).

Almost surely, 2^201930313 is an apocalyptic number.

It is an amenable number.

201930313 is a deficient number, since it is larger than the sum of its proper divisors (20711687).

201930313 is a wasteful number, since it uses less digits than its factorization.

201930313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 201930313 is about 14210.2186119708. The cubic root of 201930313 is about 586.6789501489.

Adding to 201930313 its reverse (313039102), we get a palindrome (514969415).

The spelling of 201930313 in words is "two hundred one million, nine hundred thirty thousand, three hundred thirteen".