2531271 has 4 divisors (see below), whose sum is σ = 3375032. Its totient is φ = 1687512.

The previous prime is 2531267. The next prime is 2531293. The reversal of 2531271 is 1721352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2531271 - 2² = 2531267 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531261) 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, 421876 + ... + 421881.

It is an arithmetic number, because the mean of its divisors is an integer number (843758).

2^2531271 is an apocalyptic number.

2531271 is a deficient number, since it is larger than the sum of its proper divisors (843761).

2531271 is an equidigital number, since it uses as much as digits as its factorization.

2531271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843760.

The product of its digits is 420, while the sum is 21.

The square root of 2531271 is about 1590.9968573193. The cubic root of 2531271 is about 136.2844213456.

The spelling of 2531271 in words is "two million, five hundred thirty-one thousand, two hundred seventy-one".