30985601 has 4 divisors (see below), whose sum is σ = 32054100. Its totient is φ = 29917104.

The previous prime is 30985579. The next prime is 30985609. The reversal of 30985601 is 10658903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10658903 = 311 ⋅34273.

It can be written as a sum of positive squares in 2 ways, for example, as 24760576 + 6225025 = 4976^2 + 2495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30985601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30985609) 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, 534206 + ... + 534263.

It is an arithmetic number, because the mean of its divisors is an integer number (8013525).

Almost surely, 2^30985601 is an apocalyptic number.

It is an amenable number.

30985601 is a deficient number, since it is larger than the sum of its proper divisors (1068499).

30985601 is a wasteful number, since it uses less digits than its factorization.

30985601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068498.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 30985601 is about 5566.4711442708. The cubic root of 30985601 is about 314.0894203519.

The spelling of 30985601 in words is "thirty million, nine hundred eighty-five thousand, six hundred one".