2001310315061 has 2 divisors, whose sum is σ = 2001310315062. Its totient is φ = 2001310315060.

The previous prime is 2001310315019. The next prime is 2001310315129. The reversal of 2001310315061 is 1605130131002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1587899894161 + 413410420900 = 1260119^2 + 642970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001310315061 - 2²² = 2001306120757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001310315261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000655157530 + 1000655157531.

It is an arithmetic number, because the mean of its divisors is an integer number (1000655157531).

Almost surely, 2^{2001310315061} is an apocalyptic number.

It is an amenable number.

2001310315061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001310315061 is an equidigital number, since it uses as much as digits as its factorization.

2001310315061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 2001310315061 its reverse (1605130131002), we get a palindrome (3606440446063).

The spelling of 2001310315061 in words is "two trillion, one billion, three hundred ten million, three hundred fifteen thousand, sixty-one".