875431 has 4 divisors (see below), whose sum is σ = 878152. Its totient is φ = 872712.

The previous prime is 875429. The next prime is 875443. The reversal of 875431 is 134578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134578 = 2 ⋅67289.

It is a cyclic number.

It is not a de Polignac number, because 875431 - 2¹ = 875429 is a prime.

It is a super-2 number, since 2×875431² = 1532758871522, which contains 22 as substring.

It is a Duffinian number.

875431 is a lucky number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 875431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (219538).

2⁸⁷⁵⁴³¹ is an apocalyptic number.

875431 is a deficient number, since it is larger than the sum of its proper divisors (2721).

875431 is a wasteful number, since it uses less digits than its factorization.

875431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720.

The product of its digits is 3360, while the sum is 28.

The square root of 875431 is about 935.6446975214. The cubic root of 875431 is about 95.6622608149.

The spelling of 875431 in words is "eight hundred seventy-five thousand, four hundred thirty-one".