30966985 has 16 divisors (see below), whose sum is σ = 43840512. Its totient is φ = 20548800.

The previous prime is 30966967. The next prime is 30966997. The reversal of 30966985 is 58966903.

It is not a de Polignac number, because 30966985 - 2⁷ = 30966857 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 13186 + ... + 15355.

It is an arithmetic number, because the mean of its divisors is an integer number (2740032).

Almost surely, 2^30966985 is an apocalyptic number.

30966985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30966985 is a deficient number, since it is larger than the sum of its proper divisors (12873527).

30966985 is a wasteful number, since it uses less digits than its factorization.

30966985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28584.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 30966985 is about 5564.7987384990. The cubic root of 30966985 is about 314.0265066133.

The spelling of 30966985 in words is "thirty million, nine hundred sixty-six thousand, nine hundred eighty-five".