431728853 has 4 divisors (see below), whose sum is σ = 431770560. Its totient is φ = 431687148.

The previous prime is 431728823. The next prime is 431728859. The reversal of 431728853 is 358827134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 358827134 = 2 ⋅179413567.

It is a cyclic number.

It is not a de Polignac number, because 431728853 - 2¹⁴ = 431712469 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 431728853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431728859) 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, 7778 + ... + 30396.

It is an arithmetic number, because the mean of its divisors is an integer number (107942640).

Almost surely, 2^431728853 is an apocalyptic number.

It is an amenable number.

431728853 is a deficient number, since it is larger than the sum of its proper divisors (41707).

431728853 is a wasteful number, since it uses less digits than its factorization.

431728853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41706.

The product of its digits is 161280, while the sum is 41.

The square root of 431728853 is about 20778.0858839307. The cubic root of 431728853 is about 755.7944376629.

It can be divided in two parts, 43172 and 8853, that added together give a palindrome (52025).

The spelling of 431728853 in words is "four hundred thirty-one million, seven hundred twenty-eight thousand, eight hundred fifty-three".