31020944677 has 2 divisors, whose sum is σ = 31020944678. Its totient is φ = 31020944676.

The previous prime is 31020944639. The next prime is 31020944729. The reversal of 31020944677 is 77644902013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19484251396 + 11536693281 = 139586^2 + 107409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31020944677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020942677) 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, 15510472338 + 15510472339.

It is an arithmetic number, because the mean of its divisors is an integer number (15510472339).

Almost surely, 2^31020944677 is an apocalyptic number.

It is an amenable number.

31020944677 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020944677 is an equidigital number, since it uses as much as digits as its factorization.

31020944677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 31020944677 in words is "thirty-one billion, twenty million, nine hundred forty-four thousand, six hundred seventy-seven".