431572161 has 16 divisors (see below), whose sum is σ = 602864640. Its totient is φ = 274098000.

The previous prime is 431572159. The next prime is 431572177. The reversal of 431572161 is 161275134.

It is not a de Polignac number, because 431572161 - 2¹ = 431572159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431572121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4860 + ... + 29778.

It is an arithmetic number, because the mean of its divisors is an integer number (37679040).

Almost surely, 2^431572161 is an apocalyptic number.

It is an amenable number.

431572161 is a deficient number, since it is larger than the sum of its proper divisors (171292479).

431572161 is a wasteful number, since it uses less digits than its factorization.

431572161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25196.

The product of its digits is 5040, while the sum is 30.

The square root of 431572161 is about 20774.3149345532. The cubic root of 431572161 is about 755.7029903950.

The spelling of 431572161 in words is "four hundred thirty-one million, five hundred seventy-two thousand, one hundred sixty-one".