654343231 has 4 divisors (see below), whose sum is σ = 670302864. Its totient is φ = 638383600.

The previous prime is 654343229. The next prime is 654343267. The reversal of 654343231 is 132343456.

654343231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 654343231 - 2¹ = 654343229 is a prime.

It is a super-2 number, since 2×654343231² = 856330127911038722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654343193 and 654343202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654343201) 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, 7979755 + ... + 7979836.

It is an arithmetic number, because the mean of its divisors is an integer number (167575716).

Almost surely, 2^654343231 is an apocalyptic number.

654343231 is a deficient number, since it is larger than the sum of its proper divisors (15959633).

654343231 is a wasteful number, since it uses less digits than its factorization.

654343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15959632.

The product of its digits is 25920, while the sum is 31.

The square root of 654343231 is about 25580.1335219346. The cubic root of 654343231 is about 868.1641965173.

Adding to 654343231 its reverse (132343456), we get a palindrome (786686687).

The spelling of 654343231 in words is "six hundred fifty-four million, three hundred forty-three thousand, two hundred thirty-one".