31730150 has 12 divisors (see below), whose sum is σ = 59018172. Its totient is φ = 12692040.

The previous prime is 31730137. The next prime is 31730197. The reversal of 31730150 is 5103713.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317252 + ... + 317351.

It is an arithmetic number, because the mean of its divisors is an integer number (4918181).

Almost surely, 2^31730150 is an apocalyptic number.

31730150 is a deficient number, since it is larger than the sum of its proper divisors (27288022).

31730150 is a wasteful number, since it uses less digits than its factorization.

31730150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634615 (or 634610 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 31730150 is about 5632.9521567292. The cubic root of 31730150 is about 316.5852730176.

Adding to 31730150 its reverse (5103713), we get a palindrome (36833863).

The spelling of 31730150 in words is "thirty-one million, seven hundred thirty thousand, one hundred fifty".