871673531 has 16 divisors (see below), whose sum is σ = 913920000. Its totient is φ = 830412000.

The previous prime is 871673513. The next prime is 871673549. The reversal of 871673531 is 135376178.

It is an interprime number because it is at equal distance from previous prime (871673513) and next prime (871673549).

It is a cyclic number.

It is not a de Polignac number, because 871673531 - 2¹⁰ = 871672507 is a prime.

It is a super-2 number, since 2×871673531² = 1519629489292015922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871673501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622370 + ... + 623768.

It is an arithmetic number, because the mean of its divisors is an integer number (57120000).

Almost surely, 2^871673531 is an apocalyptic number.

871673531 is a deficient number, since it is larger than the sum of its proper divisors (42246469).

871673531 is a wasteful number, since it uses less digits than its factorization.

871673531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730.

The product of its digits is 105840, while the sum is 41.

The square root of 871673531 is about 29524.1177852955. The cubic root of 871673531 is about 955.2519938430.

The spelling of 871673531 in words is "eight hundred seventy-one million, six hundred seventy-three thousand, five hundred thirty-one".