431485 has 4 divisors (see below), whose sum is σ = 517788. Its totient is φ = 345184.

The previous prime is 431479. The next prime is 431513. The reversal of 431485 is 584134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75076 + 356409 = 274^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 431485 - 2¹⁷ = 300413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43144 + ... + 43153.

It is an arithmetic number, because the mean of its divisors is an integer number (129447).

2⁴³¹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

431485 is a deficient number, since it is larger than the sum of its proper divisors (86303).

431485 is an equidigital number, since it uses as much as digits as its factorization.

431485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86302.

The product of its digits is 1920, while the sum is 25.

The square root of 431485 is about 656.8751784015. The cubic root of 431485 is about 75.5652112644.

The spelling of 431485 in words is "four hundred thirty-one thousand, four hundred eighty-five".