30969985 has 16 divisors (see below), whose sum is σ = 38030400. Its totient is φ = 24204096.

The previous prime is 30969979. The next prime is 30969997. The reversal of 30969985 is 58996903.

It is a cyclic number.

It is not a de Polignac number, because 30969985 - 2⁷ = 30969857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81526 + ... + 81904.

It is an arithmetic number, because the mean of its divisors is an integer number (2376900).

Almost surely, 2^30969985 is an apocalyptic number.

It is an amenable number.

30969985 is a deficient number, since it is larger than the sum of its proper divisors (7060415).

30969985 is a wasteful number, since it uses less digits than its factorization.

30969985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 30969985 is about 5565.0682834984. The cubic root of 30969985 is about 314.0366469730.

The spelling of 30969985 in words is "thirty million, nine hundred sixty-nine thousand, nine hundred eighty-five".