2031720271 has 6 divisors (see below), whose sum is σ = 2363429760. Its totient is φ = 1741474476.

The previous prime is 2031720263. The next prime is 2031720311. The reversal of 2031720271 is 1720271302.

It is not a de Polignac number, because 2031720271 - 2³ = 2031720263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031720871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20731791 + ... + 20731888.

It is an arithmetic number, because the mean of its divisors is an integer number (393904960).

Almost surely, 2^2031720271 is an apocalyptic number.

2031720271 is a deficient number, since it is larger than the sum of its proper divisors (331709489).

2031720271 is an equidigital number, since it uses as much as digits as its factorization.

2031720271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41463693 (or 41463686 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 2031720271 is about 45074.6078296861. The cubic root of 2031720271 is about 1266.5469825129.

Adding to 2031720271 its reverse (1720271302), we get a palindrome (3751991573).

The spelling of 2031720271 in words is "two billion, thirty-one million, seven hundred twenty thousand, two hundred seventy-one".