2031312220673 has 2 divisors, whose sum is σ = 2031312220674. Its totient is φ = 2031312220672.

The previous prime is 2031312220621. The next prime is 2031312220687. The reversal of 2031312220673 is 3760222131302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1775161851904 + 256150368769 = 1332352^2 + 506113^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031312220673 - 2⁸ = 2031312220417 is a prime.

It is not a weakly prime, because it can be changed into another prime (2031312220073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015656110336 + 1015656110337.

It is an arithmetic number, because the mean of its divisors is an integer number (1015656110337).

Almost surely, 2^{2031312220673} is an apocalyptic number.

It is an amenable number.

2031312220673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031312220673 is an equidigital number, since it uses as much as digits as its factorization.

2031312220673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 2031312220673 its reverse (3760222131302), we get a palindrome (5791534351975).

The spelling of 2031312220673 in words is "two trillion, thirty-one billion, three hundred twelve million, two hundred twenty thousand, six hundred seventy-three".