65312523 has 6 divisors (see below), whose sum is σ = 94340324. Its totient is φ = 43541676.

The previous prime is 65312503. The next prime is 65312537. The reversal of 65312523 is 32521356.

65312523 is a `hidden beast` number, since 653 + 1 + 2 + 5 + 2 + 3 = 666.

It is not a de Polignac number, because 65312523 - 2⁵ = 65312491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65312503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3628465 + ... + 3628482.

Almost surely, 2^65312523 is an apocalyptic number.

65312523 is a deficient number, since it is larger than the sum of its proper divisors (29027801).

65312523 is a wasteful number, since it uses less digits than its factorization.

65312523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256953 (or 7256950 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 65312523 is about 8081.6163606051. The cubic root of 65312523 is about 402.7159403499.

Adding to 65312523 its reverse (32521356), we get a palindrome (97833879).

The spelling of 65312523 in words is "sixty-five million, three hundred twelve thousand, five hundred twenty-three".