201630313 has 2 divisors, whose sum is σ = 201630314. Its totient is φ = 201630312.

The previous prime is 201630287. The next prime is 201630343. The reversal of 201630313 is 313036102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125731369 + 75898944 = 11213^2 + 8712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201630313 is a prime.

It is not a weakly prime, because it can be changed into another prime (201630343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100815156 + 100815157.

It is an arithmetic number, because the mean of its divisors is an integer number (100815157).

Almost surely, 2^201630313 is an apocalyptic number.

It is an amenable number.

201630313 is a deficient number, since it is larger than the sum of its proper divisors (1).

201630313 is an equidigital number, since it uses as much as digits as its factorization.

201630313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 201630313 is about 14199.6589043540. The cubic root of 201630313 is about 586.3882707968.

Adding to 201630313 its reverse (313036102), we get a palindrome (514666415).

The spelling of 201630313 in words is "two hundred one million, six hundred thirty thousand, three hundred thirteen".