431140 has 12 divisors (see below), whose sum is σ = 905436. Its totient is φ = 172448.

The previous prime is 431107. The next prime is 431141. The reversal of 431140 is 41134.

431140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 338724 = 304^2 + 582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 431140.

It is not an unprimeable number, because it can be changed into a prime (431141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10759 + ... + 10798.

It is an arithmetic number, because the mean of its divisors is an integer number (75453).

2⁴³¹¹⁴⁰ is an apocalyptic number.

It is an amenable number.

431140 is an abundant number, since it is smaller than the sum of its proper divisors (474296).

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

431140 is a wasteful number, since it uses less digits than its factorization.

431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21566 (or 21564 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 431140 is about 656.6125189181. The cubic root of 431140 is about 75.5450661460.

Adding to 431140 its reverse (41134), we get a palindrome (472274).

The spelling of 431140 in words is "four hundred thirty-one thousand, one hundred forty".