65301631 has 2 divisors, whose sum is σ = 65301632. Its totient is φ = 65301630.

The previous prime is 65301629. The next prime is 65301653. The reversal of 65301631 is 13610356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65301631 - 2¹ = 65301629 is a prime.

It is a super-2 number, since 2×65301631² = 8528606022520322, which contains 22 as substring.

Together with 65301629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65301596 and 65301605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65301031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32650815 + 32650816.

It is an arithmetic number, because the mean of its divisors is an integer number (32650816).

Almost surely, 2^65301631 is an apocalyptic number.

65301631 is a deficient number, since it is larger than the sum of its proper divisors (1).

65301631 is an equidigital number, since it uses as much as digits as its factorization.

65301631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 65301631 is about 8080.9424574118. The cubic root of 65301631 is about 402.6935524745.

Adding to 65301631 its reverse (13610356), we get a palindrome (78911987).

The spelling of 65301631 in words is "sixty-five million, three hundred one thousand, six hundred thirty-one".