65312293 has 4 divisors (see below), whose sum is σ = 65375488. Its totient is φ = 65249100.

The previous prime is 65312287. The next prime is 65312309. The reversal of 65312293 is 39221356.

65312293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65312293 - 2²⁵ = 31757861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65312243) 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 in 3 ways as a sum of consecutive naturals, for example, 30021 + ... + 32122.

It is an arithmetic number, because the mean of its divisors is an integer number (16343872).

Almost surely, 2^65312293 is an apocalyptic number.

It is an amenable number.

65312293 is a deficient number, since it is larger than the sum of its proper divisors (63195).

65312293 is a wasteful number, since it uses less digits than its factorization.

65312293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63194.

The product of its digits is 9720, while the sum is 31.

The square root of 65312293 is about 8081.6021307659. The cubic root of 65312293 is about 402.7154676239.

The spelling of 65312293 in words is "sixty-five million, three hundred twelve thousand, two hundred ninety-three".