31886 has 8 divisors (see below), whose sum is σ = 48600. Its totient is φ = 15688.

The previous prime is 31883. The next prime is 31891. The reversal of 31886 is 68813.

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

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31883) 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, 140 + ... + 288.

It is an arithmetic number, because the mean of its divisors is an integer number (6075).

2³¹⁸⁸⁶ is an apocalyptic number.

31886 is a deficient number, since it is larger than the sum of its proper divisors (16714).

31886 is a wasteful number, since it uses less digits than its factorization.

31886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

The product of its digits is 1152, while the sum is 26.

The square root of 31886 is about 178.5665142181. The cubic root of 31886 is about 31.7102754059.

It can be divided in two parts, 318 and 86, that added together give a palindrome (404).

The spelling of 31886 in words is "thirty-one thousand, eight hundred eighty-six".