431478 has 12 divisors (see below), whose sum is σ = 934908. Its totient is φ = 143820.

The previous prime is 431449. The next prime is 431479. The reversal of 431478 is 874134.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 431478.

It is not an unprimeable number, because it can be changed into a prime (431479) by changing a digit.

431478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11968 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (77909).

2⁴³¹⁴⁷⁸ is an apocalyptic number.

431478 is an abundant number, since it is smaller than the sum of its proper divisors (503430).

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

431478 is a wasteful number, since it uses less digits than its factorization.

431478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23979 (or 23976 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 431478 is about 656.8698501225. The cubic root of 431478 is about 75.5648026296.

It can be divided in two parts, 431 and 478, that added together give a palindrome (909).

The spelling of 431478 in words is "four hundred thirty-one thousand, four hundred seventy-eight".