2065319971 has 16 divisors (see below), whose sum is σ = 2482824960. Its totient is φ = 1692825120.

The previous prime is 2065319939. The next prime is 2065320011. The reversal of 2065319971 is 1799135602.

It is a cyclic number.

It is not a de Polignac number, because 2065319971 - 2⁵ = 2065319939 is a prime.

It is a super-2 number, since 2×2065319971² = 8531093165222881682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (2065319911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161791 + ... + 174088.

It is an arithmetic number, because the mean of its divisors is an integer number (155176560).

Almost surely, 2^2065319971 is an apocalyptic number.

2065319971 is a deficient number, since it is larger than the sum of its proper divisors (417504989).

2065319971 is a wasteful number, since it uses less digits than its factorization.

2065319971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335946.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 2065319971 is about 45445.7915653364. The cubic root of 2065319971 is about 1273.4907110121.

The spelling of 2065319971 in words is "two billion, sixty-five million, three hundred nineteen thousand, nine hundred seventy-one".