2331782065 has 4 divisors (see below), whose sum is σ = 2798138484. Its totient is φ = 1865425648.

The previous prime is 2331782017. The next prime is 2331782093. The reversal of 2331782065 is 5602871332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1525449249 + 806332816 = 39057^2 + 28396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331782065 - 2¹⁹ = 2331257777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 233178202 + ... + 233178211.

It is an arithmetic number, because the mean of its divisors is an integer number (699534621).

Almost surely, 2^2331782065 is an apocalyptic number.

It is an amenable number.

2331782065 is a deficient number, since it is larger than the sum of its proper divisors (466356419).

2331782065 is an equidigital number, since it uses as much as digits as its factorization.

2331782065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466356418.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 2331782065 is about 48288.5293315089. The cubic root of 2331782065 is about 1326.0584048296.

The spelling of 2331782065 in words is "two billion, three hundred thirty-one million, seven hundred eighty-two thousand, sixty-five".