31670 has 8 divisors (see below), whose sum is σ = 57024.
Its totient is φ = 12664.
The previous prime is 31667. The next prime is 31687. The reversal of 31670 is 7613.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574 + ... + 1593.
It is an arithmetic number, because the mean of its divisors is an integer number (7128).
231670 is an apocalyptic number.
31670 is a deficient number, since it is larger than the sum of its proper divisors (25354).
31670 is a wasteful number, since it uses less digits than its factorization.
31670 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3174.
The product of its (nonzero) digits is 126, while the sum is 17.
The square root of 31670 is about 177.9606698122.
The cubic root of 31670 is about 31.6385099054.
The spelling of 31670 in words is "thirty-one thousand, six hundred seventy".