8085431 has 4 divisors (see below), whose sum is σ = 8511000. Its totient is φ = 7659864.

The previous prime is 8085379. The next prime is 8085433. The reversal of 8085431 is 1345808.

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

It is a cyclic number.

It is not a de Polignac number, because 8085431 - 2¹⁰ = 8084407 is a prime.

It is a super-2 number, since 2×8085431² = 130748388911522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8085394 and 8085403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212756 + ... + 212793.

It is an arithmetic number, because the mean of its divisors is an integer number (2127750).

Almost surely, 2^8085431 is an apocalyptic number.

8085431 is a deficient number, since it is larger than the sum of its proper divisors (425569).

8085431 is a wasteful number, since it uses less digits than its factorization.

8085431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425568.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 8085431 is about 2843.4892298020. The cubic root of 8085431 is about 200.7094057424.

The spelling of 8085431 in words is "eight million, eighty-five thousand, four hundred thirty-one".