985431 has 8 divisors (see below), whose sum is σ = 1344640. Its totient is φ = 641592.

The previous prime is 985417. The next prime is 985433. The reversal of 985431 is 134589.

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

It is not a de Polignac number, because 985431 - 2⁵ = 985399 is a prime.

It is a super-2 number, since 2×985431² = 1942148511522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985433) 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 7 ways as a sum of consecutive naturals, for example, 3691 + ... + 3948.

It is an arithmetic number, because the mean of its divisors is an integer number (168080).

2⁹⁸⁵⁴³¹ is an apocalyptic number.

985431 is a deficient number, since it is larger than the sum of its proper divisors (359209).

985431 is a wasteful number, since it uses less digits than its factorization.

985431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7685.

The product of its digits is 4320, while the sum is 30.

The square root of 985431 is about 992.6887729797. The cubic root of 985431 is about 99.5119889933.

The spelling of 985431 in words is "nine hundred eighty-five thousand, four hundred thirty-one".