31989214 has 8 divisors (see below), whose sum is σ = 48013560. Its totient is φ = 15984696.

The previous prime is 31989203. The next prime is 31989227. The reversal of 31989214 is 41298913.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117 + ... + 7999.

It is an arithmetic number, because the mean of its divisors is an integer number (6001695).

Almost surely, 2^31989214 is an apocalyptic number.

31989214 is a deficient number, since it is larger than the sum of its proper divisors (16024346).

31989214 is a wasteful number, since it uses less digits than its factorization.

31989214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9914.

The product of its digits is 15552, while the sum is 37.

The square root of 31989214 is about 5655.9008124259. The cubic root of 31989214 is about 317.4445361607. Note that the first 3 decimals are identical.

The spelling of 31989214 in words is "thirty-one million, nine hundred eighty-nine thousand, two hundred fourteen".