2131071 has 8 divisors (see below), whose sum is σ = 2849280. Its totient is φ = 1416792.

The previous prime is 2131049. The next prime is 2131081. The reversal of 2131071 is 1701312.

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

It is not a de Polignac number, because 2131071 - 2⁵ = 2131039 is a prime.

2131071 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (356160).

2^2131071 is an apocalyptic number.

2131071 is a deficient number, since it is larger than the sum of its proper divisors (718209).

2131071 is a wasteful number, since it uses less digits than its factorization.

2131071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 2131071 is about 1459.8188243751. The cubic root of 2131071 is about 128.6863964602.

Adding to 2131071 its reverse (1701312), we get a palindrome (3832383).

The spelling of 2131071 in words is "two million, one hundred thirty-one thousand, seventy-one".