431856 has 30 divisors (see below), whose sum is σ = 1209000. Its totient is φ = 143904.

The previous prime is 431833. The next prime is 431857. The reversal of 431856 is 658134.

431856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431857) by changing a digit.

431856 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 5 ways as a sum of consecutive naturals, for example, 1356 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (40300).

2⁴³¹⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

431856 is an abundant number, since it is smaller than the sum of its proper divisors (777144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431856 is a wasteful number, since it uses less digits than its factorization.

431856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3004 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 431856 is about 657.1575153645. The cubic root of 431856 is about 75.5868625866.

The spelling of 431856 in words is "four hundred thirty-one thousand, eight hundred fifty-six".