431980 has 12 divisors (see below), whose sum is σ = 907200. Its totient is φ = 172784.

The previous prime is 431947. The next prime is 431983. The reversal of 431980 is 89134.

It is not an unprimeable number, because it can be changed into a prime (431983) by changing a digit.

431980 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 3 ways as a sum of consecutive naturals, for example, 10780 + ... + 10819.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁴³¹⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

431980 is an abundant number, since it is smaller than the sum of its proper divisors (475220).

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

431980 is a wasteful number, since it uses less digits than its factorization.

431980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21608 (or 21606 counting only the distinct ones).

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

The square root of 431980 is about 657.2518543146. The cubic root of 431980 is about 75.5940963821.

The spelling of 431980 in words is "four hundred thirty-one thousand, nine hundred eighty".