871431 has 8 divisors (see below), whose sum is σ = 1267584. Its totient is φ = 528120.

The previous prime is 871393. The next prime is 871439. The reversal of 871431 is 134178.

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

It is not a de Polignac number, because 871431 - 2⁷ = 871303 is a prime.

It is a super-2 number, since 2×871431² = 1518783975522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 871431.

It is not an unprimeable number, because it can be changed into a prime (871439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13171 + ... + 13236.

It is an arithmetic number, because the mean of its divisors is an integer number (158448).

2⁸⁷¹⁴³¹ is an apocalyptic number.

871431 is a deficient number, since it is larger than the sum of its proper divisors (396153).

871431 is a wasteful number, since it uses less digits than its factorization.

871431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26421.

The product of its digits is 672, while the sum is 24.

The square root of 871431 is about 933.5046866513. The cubic root of 871431 is about 95.5163390444.

The spelling of 871431 in words is "eight hundred seventy-one thousand, four hundred thirty-one".