2543231 has 4 divisors (see below), whose sum is σ = 2557464. Its totient is φ = 2529000.

The previous prime is 2543221. The next prime is 2543237. The reversal of 2543231 is 1323452.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2543231 - 2¹⁴ = 2526847 is a prime.

It is a super-2 number, since 2×2543231² = 12936047838722, 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 (2543237) 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, 6845 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (639366).

2^2543231 is an apocalyptic number.

2543231 is a deficient number, since it is larger than the sum of its proper divisors (14233).

2543231 is a wasteful number, since it uses less digits than its factorization.

2543231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14232.

The product of its digits is 720, while the sum is 20.

The square root of 2543231 is about 1594.7510777548. The cubic root of 2543231 is about 136.4987275528.

Adding to 2543231 its reverse (1323452), we get a palindrome (3866683).

The spelling of 2543231 in words is "two million, five hundred forty-three thousand, two hundred thirty-one".