65530231 has 8 divisors (see below), whose sum is σ = 71565984. Its totient is φ = 59636640.

The previous prime is 65530211. The next prime is 65530247. The reversal of 65530231 is 13203556.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65530231 - 2¹⁵ = 65497463 is a prime.

It is a super-2 number, since 2×65530231² = 8588422349826722, 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 = 65530196 and 65530205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65530211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34576 + ... + 36421.

It is an arithmetic number, because the mean of its divisors is an integer number (8945748).

Almost surely, 2^65530231 is an apocalyptic number.

65530231 is a deficient number, since it is larger than the sum of its proper divisors (6035753).

65530231 is a wasteful number, since it uses less digits than its factorization.

65530231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71081.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 65530231 is about 8095.0744900835. The cubic root of 65530231 is about 403.1629054035.

Adding to 65530231 its reverse (13203556), we get a palindrome (78733787).

The spelling of 65530231 in words is "sixty-five million, five hundred thirty thousand, two hundred thirty-one".