3031100081 has 2 divisors, whose sum is σ = 3031100082. Its totient is φ = 3031100080.

The previous prime is 3031100069. The next prime is 3031100101. The reversal of 3031100081 is 1800011303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2920429681 + 110670400 = 54041^2 + 10520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031100081 is a prime.

It is a super-2 number, since 2×3031100081² = 18375135402076413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3031105081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515550040 + 1515550041.

It is an arithmetic number, because the mean of its divisors is an integer number (1515550041).

Almost surely, 2^3031100081 is an apocalyptic number.

It is an amenable number.

3031100081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031100081 is an equidigital number, since it uses as much as digits as its factorization.

3031100081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 3031100081 is about 55055.4273528051. The cubic root of 3031100081 is about 1447.2162335116.

Adding to 3031100081 its reverse (1800011303), we get a palindrome (4831111384).

The spelling of 3031100081 in words is "three billion, thirty-one million, one hundred thousand, eighty-one".