30985129 has 8 divisors (see below), whose sum is σ = 35560448. Its totient is φ = 26447040.

The previous prime is 30985121. The next prime is 30985147. The reversal of 30985129 is 92158903.

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

It is a cyclic number.

It is not a de Polignac number, because 30985129 - 2³ = 30985121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30985121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7497 + ... + 10870.

It is an arithmetic number, because the mean of its divisors is an integer number (4445056).

Almost surely, 2^30985129 is an apocalyptic number.

It is an amenable number.

30985129 is a deficient number, since it is larger than the sum of its proper divisors (4575319).

30985129 is a wasteful number, since it uses less digits than its factorization.

30985129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18615.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 30985129 is about 5566.4287474107. The cubic root of 30985129 is about 314.0878255148.

The spelling of 30985129 in words is "thirty million, nine hundred eighty-five thousand, one hundred twenty-nine".