30161091 has 8 divisors (see below), whose sum is σ = 40345344. Its totient is φ = 20042120.

The previous prime is 30161069. The next prime is 30161099. The reversal of 30161091 is 19016103.

It is a happy number.

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 30161091 - 2⁵ = 30161059 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (30161099) 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, 15231 + ... + 17096.

It is an arithmetic number, because the mean of its divisors is an integer number (5043168).

Almost surely, 2^30161091 is an apocalyptic number.

30161091 is a deficient number, since it is larger than the sum of its proper divisors (10184253).

30161091 is a wasteful number, since it uses less digits than its factorization.

30161091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32641.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 30161091 is about 5491.9114158916. The cubic root of 30161091 is about 311.2784216236.

Adding to 30161091 its reverse (19016103), we get a palindrome (49177194).

The spelling of 30161091 in words is "thirty million, one hundred sixty-one thousand, ninety-one".