30973161 has 8 divisors (see below), whose sum is σ = 41400160. Its totient is φ = 20597472.

The previous prime is 30973121. The next prime is 30973169. The reversal of 30973161 is 16137903.

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

It is not a de Polignac number, because 30973161 - 2¹⁸ = 30711017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30973169) 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, 11395 + ... + 13848.

It is an arithmetic number, because the mean of its divisors is an integer number (5175020).

Almost surely, 2^30973161 is an apocalyptic number.

It is an amenable number.

30973161 is a deficient number, since it is larger than the sum of its proper divisors (10426999).

30973161 is a wasteful number, since it uses less digits than its factorization.

30973161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25655.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 30973161 is about 5565.3536275784. The cubic root of 30973161 is about 314.0473815202.

The spelling of 30973161 in words is "thirty million, nine hundred seventy-three thousand, one hundred sixty-one".