31876 has 12 divisors (see below), whose sum is σ = 60172. Its totient is φ = 14688.

The previous prime is 31873. The next prime is 31883. The reversal of 31876 is 67813.

It can be written as a sum of positive squares in 2 ways, for example, as 1600 + 30276 = 40^2 + 174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31876.

It is not an unprimeable number, because it can be changed into a prime (31873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255 + ... + 358.

2³¹⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

31876 is a deficient number, since it is larger than the sum of its proper divisors (28296).

31876 is a wasteful number, since it uses less digits than its factorization.

31876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 31876 is about 178.5385112518. The cubic root of 31876 is about 31.7069600960.

Subtracting 31876 from its reverse (67813), we obtain a cube (35937 = 33³).

The spelling of 31876 in words is "thirty-one thousand, eight hundred seventy-six".