2531871 has 16 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 1665144.

The previous prime is 2531869. The next prime is 2531891. The reversal of 2531871 is 1781352.

2531871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2531871 - 2¹ = 2531869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (237600).

2^2531871 is an apocalyptic number.

2531871 is a deficient number, since it is larger than the sum of its proper divisors (1269729).

2531871 is a wasteful number, since it uses less digits than its factorization.

2531871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275 (or 1269 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2531871 is about 1591.1854071729. The cubic root of 2531871 is about 136.2951885574.

The spelling of 2531871 in words is "two million, five hundred thirty-one thousand, eight hundred seventy-one".