2340505561 has 2 divisors, whose sum is σ = 2340505562. Its totient is φ = 2340505560.

The previous prime is 2340505547. The next prime is 2340505567. The reversal of 2340505561 is 1655050432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2321312400 + 19193161 = 48180^2 + 4381^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340505561 - 2⁵ = 2340505529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2340505567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170252780 + 1170252781.

It is an arithmetic number, because the mean of its divisors is an integer number (1170252781).

Almost surely, 2^2340505561 is an apocalyptic number.

It is an amenable number.

2340505561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340505561 is an equidigital number, since it uses as much as digits as its factorization.

2340505561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2340505561 is about 48378.7718012766. The cubic root of 2340505561 is about 1327.7099984967.

Adding to 2340505561 its reverse (1655050432), we get a palindrome (3995555993).

The spelling of 2340505561 in words is "two billion, three hundred forty million, five hundred five thousand, five hundred sixty-one".