20013361 has 8 divisors (see below), whose sum is σ = 20569824. Its totient is φ = 19461120.

The previous prime is 20013353. The next prime is 20013373. The reversal of 20013361 is 16331002.

20013361 is nontrivially palindromic in base 16.

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 20013361 - 2³ = 20013353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013311) 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, 10146 + ... + 11956.

It is an arithmetic number, because the mean of its divisors is an integer number (2571228).

Almost surely, 2^20013361 is an apocalyptic number.

It is an amenable number.

20013361 is a deficient number, since it is larger than the sum of its proper divisors (556463).

20013361 is a wasteful number, since it uses less digits than its factorization.

20013361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20013361 is about 4473.6295108111. The cubic root of 20013361 is about 271.5021937606.

Adding to 20013361 its reverse (16331002), we get a palindrome (36344363).

The spelling of 20013361 in words is "twenty million, thirteen thousand, three hundred sixty-one".