3109487081 has 2 divisors, whose sum is σ = 3109487082. Its totient is φ = 3109487080.

The previous prime is 3109487077. The next prime is 3109487099. The reversal of 3109487081 is 1807849013.

3109487081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2979413056 + 130074025 = 54584^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 3109487081 - 2² = 3109487077 is a prime.

It is a super-2 number, since 2×3109487081² = 19337819813811801122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3109487021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1554743540 + 1554743541.

It is an arithmetic number, because the mean of its divisors is an integer number (1554743541).

Almost surely, 2^3109487081 is an apocalyptic number.

It is an amenable number.

3109487081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3109487081 is an equidigital number, since it uses as much as digits as its factorization.

3109487081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 3109487081 is about 55762.7750475171. The cubic root of 3109487081 is about 1459.5856522636.

The spelling of 3109487081 in words is "three billion, one hundred nine million, four hundred eighty-seven thousand, eighty-one".