2303641561 has 8 divisors (see below), whose sum is σ = 2481223304. Its totient is φ = 2126113920.

The previous prime is 2303641519. The next prime is 2303641573. The reversal of 2303641561 is 1651463032.

It can be written as a sum of positive squares in 4 ways, for example, as 155875225 + 2147766336 = 12485^2 + 46344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2303641561 - 2¹⁵ = 2303608793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2303641591) 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 7 ways as a sum of consecutive naturals, for example, 137155 + ... + 153031.

It is an arithmetic number, because the mean of its divisors is an integer number (310152913).

Almost surely, 2^2303641561 is an apocalyptic number.

It is an amenable number.

2303641561 is a deficient number, since it is larger than the sum of its proper divisors (177581743).

2303641561 is a wasteful number, since it uses less digits than its factorization.

2303641561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27051.

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

The square root of 2303641561 is about 47996.2661151886. The cubic root of 2303641561 is about 1320.7024041364.

The spelling of 2303641561 in words is "two billion, three hundred three million, six hundred forty-one thousand, five hundred sixty-one".