3103618561 has 2 divisors, whose sum is σ = 3103618562. Its totient is φ = 3103618560.

The previous prime is 3103618559. The next prime is 3103618601. The reversal of 3103618561 is 1658163013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3103047025 + 571536 = 55705^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 3103618561 - 2¹ = 3103618559 is a prime.

Together with 3103618559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3103918561) 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, 1551809280 + 1551809281.

It is an arithmetic number, because the mean of its divisors is an integer number (1551809281).

Almost surely, 2^3103618561 is an apocalyptic number.

It is an amenable number.

3103618561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3103618561 is an equidigital number, since it uses as much as digits as its factorization.

3103618561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 3103618561 is about 55710.1297880377. The cubic root of 3103618561 is about 1458.6668510127. Note that the first 3 decimals are identical.

The spelling of 3103618561 in words is "three billion, one hundred three million, six hundred eighteen thousand, five hundred sixty-one".