30801161 has 8 divisors (see below), whose sum is σ = 33738120. Its totient is φ = 27989248.

The previous prime is 30801151. The next prime is 30801181. The reversal of 30801161 is 16110803.

It can be written as a sum of positive squares in 4 ways, for example, as 4227136 + 26574025 = 2056^2 + 5155^2 .

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 30801161 - 2¹⁰ = 30800137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30801101) 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, 30746 + ... + 31731.

It is an arithmetic number, because the mean of its divisors is an integer number (4217265).

Almost surely, 2^30801161 is an apocalyptic number.

It is an amenable number.

30801161 is a deficient number, since it is larger than the sum of its proper divisors (2936959).

30801161 is a wasteful number, since it uses less digits than its factorization.

30801161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62523.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 30801161 is about 5549.8793680584. The cubic root of 30801161 is about 313.4649800163.

Adding to 30801161 its reverse (16110803), we get a palindrome (46911964).

The spelling of 30801161 in words is "thirty million, eight hundred one thousand, one hundred sixty-one".