201021310313 has 2 divisors, whose sum is σ = 201021310314. Its totient is φ = 201021310312.

The previous prime is 201021310271. The next prime is 201021310381. The reversal of 201021310313 is 313013120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199212254224 + 1809056089 = 446332^2 + 42533^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021310313 - 2¹² = 201021306217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201021310291 and 201021310300.

It is not a weakly prime, because it can be changed into another prime (201021310013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510655156 + 100510655157.

It is an arithmetic number, because the mean of its divisors is an integer number (100510655157).

Almost surely, 2^201021310313 is an apocalyptic number.

It is an amenable number.

201021310313 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021310313 is an equidigital number, since it uses as much as digits as its factorization.

201021310313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 201021310313 its reverse (313013120102), we get a palindrome (514034430415).

The spelling of 201021310313 in words is "two hundred one billion, twenty-one million, three hundred ten thousand, three hundred thirteen".