431908 has 12 divisors (see below), whose sum is σ = 795760. Its totient is φ = 204552.

The previous prime is 431903. The next prime is 431911. The reversal of 431908 is 809134.

It is not an unprimeable number, because it can be changed into a prime (431903) by changing a digit.

431908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2766 + ... + 2917.

2⁴³¹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

431908 is a deficient number, since it is larger than the sum of its proper divisors (363852).

431908 is a wasteful number, since it uses less digits than its factorization.

431908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706 (or 5704 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 431908 is about 657.1970785084. The cubic root of 431908 is about 75.5898962823.

The spelling of 431908 in words is "four hundred thirty-one thousand, nine hundred eight".