31894 has 8 divisors (see below), whose sum is σ = 49248. Its totient is φ = 15480.

The previous prime is 31891. The next prime is 31907. The reversal of 31894 is 49813.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31891) 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, 142 + ... + 289.

It is an arithmetic number, because the mean of its divisors is an integer number (6156).

2³¹⁸⁹⁴ is an apocalyptic number.

31894 is a deficient number, since it is larger than the sum of its proper divisors (17354).

31894 is a wasteful number, since it uses less digits than its factorization.

31894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its digits is 864, while the sum is 25.

The square root of 31894 is about 178.5889134297. The cubic root of 31894 is about 31.7129271547.

It can be divided in two parts, 318 and 94, that multiplied together give a palindrome (29892).

The spelling of 31894 in words is "thirty-one thousand, eight hundred ninety-four".