431332563 has 4 divisors (see below), whose sum is σ = 575110088. Its totient is φ = 287555040.

The previous prime is 431332529. The next prime is 431332571. The reversal of 431332563 is 365233134.

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

It is not a de Polignac number, because 431332563 - 2¹⁰ = 431331539 is a prime.

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 431332563.

It is not an unprimeable number, because it can be changed into a prime (431332523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71888758 + ... + 71888763.

It is an arithmetic number, because the mean of its divisors is an integer number (143777522).

Almost surely, 2^431332563 is an apocalyptic number.

431332563 is a deficient number, since it is larger than the sum of its proper divisors (143777525).

431332563 is a wasteful number, since it uses less digits than its factorization.

431332563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143777524.

The product of its digits is 19440, while the sum is 30.

The square root of 431332563 is about 20768.5474455967. The cubic root of 431332563 is about 755.5631154144.

Adding to 431332563 its reverse (365233134), we get a palindrome (796565697).

The spelling of 431332563 in words is "four hundred thirty-one million, three hundred thirty-two thousand, five hundred sixty-three".