65434431 has 8 divisors (see below), whose sum is σ = 87401520. Its totient is φ = 43545152.

The previous prime is 65434429. The next prime is 65434511. The reversal of 65434431 is 13443456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65434431 - 2¹ = 65434429 is a prime.

It is a super-2 number, since 2×65434431² = 8563329520587522, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65434331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17460 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (10925190).

Almost surely, 2^65434431 is an apocalyptic number.

65434431 is a deficient number, since it is larger than the sum of its proper divisors (21967089).

65434431 is a wasteful number, since it uses less digits than its factorization.

65434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38905.

The product of its digits is 17280, while the sum is 30.

The square root of 65434431 is about 8089.1551474799. The cubic root of 65434431 is about 402.9663455242.

Adding to 65434431 its reverse (13443456), we get a palindrome (78877887).

The spelling of 65434431 in words is "sixty-five million, four hundred thirty-four thousand, four hundred thirty-one".