2340136561 has 12 divisors (see below), whose sum is σ = 2723455668. Its totient is φ = 2004905952.

The previous prime is 2340136559. The next prime is 2340136567. The reversal of 2340136561 is 1656310432.

It can be written as a sum of positive squares in 2 ways, for example, as 1652910336 + 687226225 = 40656^2 + 26215^2 .

It is not a de Polignac number, because 2340136561 - 2¹ = 2340136559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2340136567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109615 + ... + 129211.

It is an arithmetic number, because the mean of its divisors is an integer number (226954639).

Almost surely, 2^2340136561 is an apocalyptic number.

It is an amenable number.

2340136561 is a deficient number, since it is larger than the sum of its proper divisors (383319107).

2340136561 is a wasteful number, since it uses less digits than its factorization.

2340136561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22048 (or 22041 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2340136561 is about 48374.9579948138. The cubic root of 2340136561 is about 1327.6402200200.

Adding to 2340136561 its reverse (1656310432), we get a palindrome (3996446993).

The spelling of 2340136561 in words is "two billion, three hundred forty million, one hundred thirty-six thousand, five hundred sixty-one".