431066 has 8 divisors (see below), whose sum is σ = 674784. Its totient is φ = 206140.

The previous prime is 431063. The next prime is 431077. The reversal of 431066 is 660134.

431066 = 184² + 185² + ... + 195².

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (431063) by changing a digit.

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, 4640 + ... + 4731.

It is an arithmetic number, because the mean of its divisors is an integer number (84348).

2⁴³¹⁰⁶⁶ is an apocalyptic number.

431066 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

431066 is a deficient number, since it is larger than the sum of its proper divisors (243718).

431066 is a wasteful number, since it uses less digits than its factorization.

431066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 431066 is about 656.5561666758. The cubic root of 431066 is about 75.5407437645.

The spelling of 431066 in words is "four hundred thirty-one thousand, sixty-six".