30985707 has 4 divisors (see below), whose sum is σ = 41314280. Its totient is φ = 20657136.

The previous prime is 30985673. The next prime is 30985711. The reversal of 30985707 is 70758903.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30985707 - 2⁷ = 30985579 is a prime.

It is a super-2 number, since 2×30985707² = 1920228076579698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30985907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5164282 + ... + 5164287.

It is an arithmetic number, because the mean of its divisors is an integer number (10328570).

Almost surely, 2^30985707 is an apocalyptic number.

30985707 is a deficient number, since it is larger than the sum of its proper divisors (10328573).

30985707 is a wasteful number, since it uses less digits than its factorization.

30985707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10328572.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 30985707 is about 5566.4806655552. The cubic root of 30985707 is about 314.0897785123.

The spelling of 30985707 in words is "thirty million, nine hundred eighty-five thousand, seven hundred seven".