5643231 has 8 divisors (see below), whose sum is σ = 8208384. Its totient is φ = 3420120.

The previous prime is 5643227. The next prime is 5643241. The reversal of 5643231 is 1323465.

It is a happy number.

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

It is not a de Polignac number, because 5643231 - 2² = 5643227 is a prime.

It is a super-2 number, since 2×5643231² = 63692112238722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643221) 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, 85471 + ... + 85536.

It is an arithmetic number, because the mean of its divisors is an integer number (1026048).

Almost surely, 2^5643231 is an apocalyptic number.

5643231 is a deficient number, since it is larger than the sum of its proper divisors (2565153).

5643231 is a wasteful number, since it uses less digits than its factorization.

5643231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171021.

The product of its digits is 2160, while the sum is 24.

The square root of 5643231 is about 2375.5485682259. The cubic root of 5643231 is about 178.0365934949.

Adding to 5643231 its reverse (1323465), we get a palindrome (6966696).

The spelling of 5643231 in words is "five million, six hundred forty-three thousand, two hundred thirty-one".