2571231 has 8 divisors (see below), whose sum is σ = 3692080. Its totient is φ = 1582272.

The previous prime is 2571209. The next prime is 2571269. The reversal of 2571231 is 1321752.

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

It is not a de Polignac number, because 2571231 - 2¹⁰ = 2570207 is a prime.

It is a super-2 number, since 2×2571231² = 13222457710722, which contains 22 as substring.

It is a Duffinian number.

2571231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2571198 and 2571207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571281) 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, 32926 + ... + 33003.

It is an arithmetic number, because the mean of its divisors is an integer number (461510).

2^2571231 is an apocalyptic number.

2571231 is a deficient number, since it is larger than the sum of its proper divisors (1120849).

2571231 is a wasteful number, since it uses less digits than its factorization.

2571231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65945.

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

The square root of 2571231 is about 1603.5058465749. The cubic root of 2571231 is about 136.9978332724.

Adding to 2571231 its reverse (1321752), we get a palindrome (3892983).

The spelling of 2571231 in words is "two million, five hundred seventy-one thousand, two hundred thirty-one".