431071 has 4 divisors (see below), whose sum is σ = 432432. Its totient is φ = 429712.

The previous prime is 431063. The next prime is 431077. The reversal of 431071 is 170134.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 431071 - 2³ = 431063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431077) 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 3 ways as a sum of consecutive naturals, for example, 75 + ... + 931.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

2⁴³¹⁰⁷¹ is an apocalyptic number.

431071 is a deficient number, since it is larger than the sum of its proper divisors (1361).

431071 is an equidigital number, since it uses as much as digits as its factorization.

431071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 431071 is about 656.5599744121. The cubic root of 431071 is about 75.5410358328.

The spelling of 431071 in words is "four hundred thirty-one thousand, seventy-one".