65344231 has 2 divisors, whose sum is σ = 65344232. Its totient is φ = 65344230.

The previous prime is 65344217. The next prime is 65344247. The reversal of 65344231 is 13244356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65344231 - 2¹¹ = 65342183 is a prime.

It is a super-2 number, since 2×65344231² = 8539737049962722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65344231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65344291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32672115 + 32672116.

It is an arithmetic number, because the mean of its divisors is an integer number (32672116).

Almost surely, 2^65344231 is an apocalyptic number.

65344231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65344231 is an equidigital number, since it uses as much as digits as its factorization.

65344231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 65344231 is about 8083.5778588444. The cubic root of 65344231 is about 402.7811001415.

Adding to 65344231 its reverse (13244356), we get a palindrome (78588587).

The spelling of 65344231 in words is "sixty-five million, three hundred forty-four thousand, two hundred thirty-one".