31989714 has 8 divisors (see below), whose sum is σ = 63979440. Its totient is φ = 10663236.

The previous prime is 31989701. The next prime is 31989731. The reversal of 31989714 is 41798913.

It is a happy number.

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

31989714 is an admirable number.

It is a Curzon 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, 2665804 + ... + 2665815.

It is an arithmetic number, because the mean of its divisors is an integer number (7997430).

Almost surely, 2^31989714 is an apocalyptic number.

31989714 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31989714 is a wasteful number, since it uses less digits than its factorization.

31989714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331624.

The product of its digits is 54432, while the sum is 42.

The square root of 31989714 is about 5655.9450138770. The cubic root of 31989714 is about 317.4461900665.

The spelling of 31989714 in words is "thirty-one million, nine hundred eighty-nine thousand, seven hundred fourteen".