30801 has 4 divisors (see below), whose sum is σ = 41072. Its totient is φ = 20532.

The previous prime is 30781. The next prime is 30803. The reversal of 30801 is 10803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30801 - 2¹¹ = 28753 is a prime.

It is a D-number.

It is the 176-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (30803) by changing a digit.

It is a nontrivial repunit in base 175.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5131 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (10268).

2³⁰⁸⁰¹ is an apocalyptic number.

It is an amenable number.

30801 is a deficient number, since it is larger than the sum of its proper divisors (10271).

30801 is a wasteful number, since it uses less digits than its factorization.

30801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30801 is about 175.5021367391. The cubic root of 30801 is about 31.3464433847.

It can be divided in two parts, 3080 and 1, that added together give a triangular number (3081 = T₇₈).

The spelling of 30801 in words is "thirty thousand, eight hundred one".