431134465 has 4 divisors (see below), whose sum is σ = 517361364. Its totient is φ = 344907568.

The previous prime is 431134441. The next prime is 431134499. The reversal of 431134465 is 564431134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564431134 = 2 ⋅282215567.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 384512881 = 6828^2 + 19609^2 .

It is a cyclic number.

It is not a de Polignac number, because 431134465 - 2¹¹ = 431132417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 43113442 + ... + 43113451.

It is an arithmetic number, because the mean of its divisors is an integer number (129340341).

Almost surely, 2^431134465 is an apocalyptic number.

It is an amenable number.

431134465 is a deficient number, since it is larger than the sum of its proper divisors (86226899).

431134465 is an equidigital number, since it uses as much as digits as its factorization.

431134465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86226898.

The product of its digits is 17280, while the sum is 31.

The square root of 431134465 is about 20763.7777150498. Note that the first 4 decimals coincide. The cubic root of 431134465 is about 755.4474286068.

Adding to 431134465 its reverse (564431134), we get a palindrome (995565599).

The spelling of 431134465 in words is "four hundred thirty-one million, one hundred thirty-four thousand, four hundred sixty-five".