2000031321061 has 2 divisors, whose sum is σ = 2000031321062. Its totient is φ = 2000031321060.

The previous prime is 2000031321031. The next prime is 2000031321133. The reversal of 2000031321061 is 1601231300002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1514056420900 + 485974900161 = 1230470^2 + 697119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000031321061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000031321031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000015660530 + 1000015660531.

It is an arithmetic number, because the mean of its divisors is an integer number (1000015660531).

Almost surely, 2^{2000031321061} is an apocalyptic number.

It is an amenable number.

2000031321061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000031321061 is an equidigital number, since it uses as much as digits as its factorization.

2000031321061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2000031321061 its reverse (1601231300002), we get a palindrome (3601262621063).

The spelling of 2000031321061 in words is "two trillion, thirty-one million, three hundred twenty-one thousand, sixty-one".