65308231 has 2 divisors, whose sum is σ = 65308232. Its totient is φ = 65308230.

The previous prime is 65308213. The next prime is 65308249. The reversal of 65308231 is 13280356.

65308231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (65308213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (65308213) and next prime (65308249).

It is a cyclic number.

It is not a de Polignac number, because 65308231 - 2⁹ = 65307719 is a prime.

It is a super-2 number, since 2×65308231² = 8530330072698722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65308231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65308211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32654115 + 32654116.

It is an arithmetic number, because the mean of its divisors is an integer number (32654116).

Almost surely, 2^65308231 is an apocalyptic number.

65308231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65308231 is an equidigital number, since it uses as much as digits as its factorization.

65308231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 65308231 is about 8081.3508153031. The cubic root of 65308231 is about 402.7071186896.

Adding to 65308231 its reverse (13280356), we get a palindrome (78588587).

The spelling of 65308231 in words is "sixty-five million, three hundred eight thousand, two hundred thirty-one".