2130871 has 4 divisors (see below), whose sum is σ = 2133792. Its totient is φ = 2127952.

The previous prime is 2130857. The next prime is 2130901. The reversal of 2130871 is 1780312.

2130871 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2130871 - 2¹¹ = 2128823 is a prime.

It is a super-2 number, since 2×2130871² = 9081222437282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (533448).

2^2130871 is an apocalyptic number.

2130871 is a deficient number, since it is larger than the sum of its proper divisors (2921).

2130871 is a wasteful number, since it uses less digits than its factorization.

2130871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2130871 is about 1459.7503211166. The cubic root of 2130871 is about 128.6823706152.

The spelling of 2130871 in words is "two million, one hundred thirty thousand, eight hundred seventy-one".