30976682861 has 2 divisors, whose sum is σ = 30976682862. Its totient is φ = 30976682860.

The previous prime is 30976682827. The next prime is 30976682909. The reversal of 30976682861 is 16828667903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23353646761 + 7623036100 = 152819^2 + 87310^2 .

It is an emirp because it is prime and its reverse (16828667903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30976682861 is a prime.

It is a super-2 number, since 2×30976682861² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30976682797 and 30976682806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30976682801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15488341430 + 15488341431.

It is an arithmetic number, because the mean of its divisors is an integer number (15488341431).

Almost surely, 2^30976682861 is an apocalyptic number.

It is an amenable number.

30976682861 is a deficient number, since it is larger than the sum of its proper divisors (1).

30976682861 is an equidigital number, since it uses as much as digits as its factorization.

30976682861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 30976682861 in words is "thirty billion, nine hundred seventy-six million, six hundred eighty-two thousand, eight hundred sixty-one".