30973138 has 16 divisors (see below), whose sum is σ = 53193024. Its totient is φ = 13250160.

The previous prime is 30973121. The next prime is 30973169. The reversal of 30973138 is 83137903.

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 7 ways as a sum of consecutive naturals, for example, 7581 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (3324564).

Almost surely, 2^30973138 is an apocalyptic number.

30973138 is a deficient number, since it is larger than the sum of its proper divisors (22219886).

30973138 is a wasteful number, since it uses less digits than its factorization.

30973138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30973138 is about 5565.3515612223. The cubic root of 30973138 is about 314.0473037852.

The spelling of 30973138 in words is "thirty million, nine hundred seventy-three thousand, one hundred thirty-eight".