431216353 has 4 divisors (see below), whose sum is σ = 431365140. Its totient is φ = 431067568.

The previous prime is 431216327. The next prime is 431216371. The reversal of 431216353 is 353612134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60730849 + 370485504 = 7793^2 + 19248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431216353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431216453) 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, 69958 + ... + 75871.

It is an arithmetic number, because the mean of its divisors is an integer number (107841285).

Almost surely, 2^431216353 is an apocalyptic number.

It is an amenable number.

431216353 is a deficient number, since it is larger than the sum of its proper divisors (148787).

431216353 is a wasteful number, since it uses less digits than its factorization.

431216353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148786.

The product of its digits is 6480, while the sum is 28.

The square root of 431216353 is about 20765.7495169329. The cubic root of 431216353 is about 755.4952544924.

Adding to 431216353 its reverse (353612134), we get a palindrome (784828487).

The spelling of 431216353 in words is "four hundred thirty-one million, two hundred sixteen thousand, three hundred fifty-three".