1031717979161 has 2 divisors, whose sum is σ = 1031717979162. Its totient is φ = 1031717979160.

The previous prime is 1031717979119. The next prime is 1031717979179. The reversal of 1031717979161 is 1619797171301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652346982400 + 379370996761 = 807680^2 + 615931^2 .

It is an emirp because it is prime and its reverse (1619797171301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031717979161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1031717970161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515858989580 + 515858989581.

It is an arithmetic number, because the mean of its divisors is an integer number (515858989581).

Almost surely, 2^{1031717979161} is an apocalyptic number.

It is an amenable number.

1031717979161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031717979161 is an equidigital number, since it uses as much as digits as its factorization.

1031717979161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500094, while the sum is 53.

The spelling of 1031717979161 in words is "one trillion, thirty-one billion, seven hundred seventeen million, nine hundred seventy-nine thousand, one hundred sixty-one".