2001313 has 2 divisors, whose sum is σ = 2001314. Its totient is φ = 2001312.

The previous prime is 2001281. The next prime is 2001331. The reversal of 2001313 is 3131002.

Together with next prime (2001331) 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., 1993744 + 7569 = 1412^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001313 - 2⁵ = 2001281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001313.

It is not a weakly prime, because it can be changed into another prime (2001353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000656 + 1000657.

It is an arithmetic number, because the mean of its divisors is an integer number (1000657).

2^2001313 is an apocalyptic number.

It is an amenable number.

2001313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001313 is an equidigital number, since it uses as much as digits as its factorization.

2001313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 2001313 is about 1414.6777018106. The cubic root of 2001313 is about 126.0196702305.

Adding to 2001313 its reverse (3131002), we get a palindrome (5132315).

The spelling of 2001313 in words is "two million, one thousand, three hundred thirteen".