65312443 has 36 divisors (see below), whose sum is σ = 83769480. Its totient is φ = 50621760.

The previous prime is 65312441. The next prime is 65312449. The reversal of 65312443 is 34421356.

It is not a de Polignac number, because 65312443 - 2¹ = 65312441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65312441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 894655 + ... + 894727.

It is an arithmetic number, because the mean of its divisors is an integer number (2326930).

Almost surely, 2^65312443 is an apocalyptic number.

65312443 is a deficient number, since it is larger than the sum of its proper divisors (18457037).

65312443 is a wasteful number, since it uses less digits than its factorization.

65312443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 130 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 65312443 is about 8081.6114110987. The cubic root of 65312443 is about 402.7157759236.

Adding to 65312443 its reverse (34421356), we get a palindrome (99733799).

The spelling of 65312443 in words is "sixty-five million, three hundred twelve thousand, four hundred forty-three".