2731630561 has 16 divisors (see below), whose sum is σ = 3063630528. Its totient is φ = 2413713600.

The previous prime is 2731630543. The next prime is 2731630591. The reversal of 2731630561 is 1650361372.

It is a cyclic number.

It is not a de Polignac number, because 2731630561 - 2⁵ = 2731630529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2731630511) 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 in 15 ways as a sum of consecutive naturals, for example, 477826 + ... + 483508.

It is an arithmetic number, because the mean of its divisors is an integer number (191476908).

Almost surely, 2^2731630561 is an apocalyptic number.

It is an amenable number.

2731630561 is a deficient number, since it is larger than the sum of its proper divisors (331999967).

2731630561 is a wasteful number, since it uses less digits than its factorization.

2731630561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 2731630561 is about 52265.0032143881. The cubic root of 2731630561 is about 1397.8931850238.

The spelling of 2731630561 in words is "two billion, seven hundred thirty-one million, six hundred thirty thousand, five hundred sixty-one".