31389314 has 16 divisors (see below), whose sum is σ = 51464160. Its totient is φ = 14240160.

The previous prime is 31389301. The next prime is 31389317. The reversal of 31389314 is 41398313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31389317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13982 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (3216510).

Almost surely, 2^31389314 is an apocalyptic number.

31389314 is a deficient number, since it is larger than the sum of its proper divisors (20074846).

31389314 is a wasteful number, since it uses less digits than its factorization.

31389314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its digits is 7776, while the sum is 32.

The square root of 31389314 is about 5602.6167100740. The cubic root of 31389314 is about 315.4476343479.

The spelling of 31389314 in words is "thirty-one million, three hundred eighty-nine thousand, three hundred fourteen".