201018313 has 2 divisors, whose sum is σ = 201018314. Its totient is φ = 201018312.

The previous prime is 201018289. The next prime is 201018331. The reversal of 201018313 is 313810102.

Together with next prime (201018331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130256569 + 70761744 = 11413^2 + 8412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201018313 is a prime.

It is a super-2 number, since 2×201018313² = 80816724322731938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201018383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100509156 + 100509157.

It is an arithmetic number, because the mean of its divisors is an integer number (100509157).

Almost surely, 2^201018313 is an apocalyptic number.

It is an amenable number.

201018313 is a deficient number, since it is larger than the sum of its proper divisors (1).

201018313 is an equidigital number, since it uses as much as digits as its factorization.

201018313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 201018313 is about 14178.0927137609. The cubic root of 201018313 is about 585.7943896533.

Adding to 201018313 its reverse (313810102), we get a palindrome (514828415).

The spelling of 201018313 in words is "two hundred one million, eighteen thousand, three hundred thirteen".