65324431 has 4 divisors (see below), whose sum is σ = 65763000. Its totient is φ = 64885864.

The previous prime is 65324429. The next prime is 65324447. The reversal of 65324431 is 13442356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65324431 - 2¹ = 65324429 is a prime.

It is a super-2 number, since 2×65324431² = 8534562570947522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65324431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65324401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219061 + ... + 219358.

It is an arithmetic number, because the mean of its divisors is an integer number (16440750).

Almost surely, 2^65324431 is an apocalyptic number.

65324431 is a deficient number, since it is larger than the sum of its proper divisors (438569).

65324431 is a wasteful number, since it uses less digits than its factorization.

65324431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438568.

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

The square root of 65324431 is about 8082.3530608357. The cubic root of 65324431 is about 402.7404137065.

Adding to 65324431 its reverse (13442356), we get a palindrome (78766787).

The spelling of 65324431 in words is "sixty-five million, three hundred twenty-four thousand, four hundred thirty-one".