30970906 has 8 divisors (see below), whose sum is σ = 49189140. Its totient is φ = 14574528.

The previous prime is 30970897. The next prime is 30970913. The reversal of 30970906 is 60907903.

It can be written as a sum of positive squares in 2 ways, for example, as 30969225 + 1681 = 5565^2 + 41^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 910909 = 30970906 / (3 + 0 + 9 + 7 + 0 + 9 + 0 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455421 + ... + 455488.

Almost surely, 2^30970906 is an apocalyptic number.

30970906 is a deficient number, since it is larger than the sum of its proper divisors (18218234).

30970906 is a wasteful number, since it uses less digits than its factorization.

30970906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910928.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 30970906 is about 5565.1510311940. The cubic root of 30970906 is about 314.0397599320.

The spelling of 30970906 in words is "thirty million, nine hundred seventy thousand, nine hundred six".