65231671 has 2 divisors, whose sum is σ = 65231672. Its totient is φ = 65231670.

The previous prime is 65231659. The next prime is 65231687. The reversal of 65231671 is 17613256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65231671 - 2¹¹ = 65229623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65231371) 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, 32615835 + 32615836.

It is an arithmetic number, because the mean of its divisors is an integer number (32615836).

Almost surely, 2^65231671 is an apocalyptic number.

65231671 is a deficient number, since it is larger than the sum of its proper divisors (1).

65231671 is an equidigital number, since it uses as much as digits as its factorization.

65231671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 65231671 is about 8076.6125943987. The cubic root of 65231671 is about 402.5496943645.

It can be divided in two parts, 652 and 31671, that added together give a palindrome (32323).

The spelling of 65231671 in words is "sixty-five million, two hundred thirty-one thousand, six hundred seventy-one".