654231 has 4 divisors (see below), whose sum is σ = 872312. Its totient is φ = 436152.

The previous prime is 654229. The next prime is 654233. The reversal of 654231 is 132456.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (654229) and next prime (654233).

It is not a de Polignac number, because 654231 - 2¹ = 654229 is a prime.

It is a super-2 number, since 2×654231² = 856036402722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654198 and 654207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654231.

It is not an unprimeable number, because it can be changed into a prime (654233) 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, 109036 + ... + 109041.

It is an arithmetic number, because the mean of its divisors is an integer number (218078).

2⁶⁵⁴²³¹ is an apocalyptic number.

654231 is a deficient number, since it is larger than the sum of its proper divisors (218081).

654231 is a wasteful number, since it uses less digits than its factorization.

654231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218080.

The product of its digits is 720, while the sum is 21.

The square root of 654231 is about 808.8454734991. The cubic root of 654231 is about 86.8114558701.

Adding to 654231 its reverse (132456), we get a palindrome (786687).

The spelling of 654231 in words is "six hundred fifty-four thousand, two hundred thirty-one".