20041013 has 8 divisors (see below), whose sum is σ = 20715168. Its totient is φ = 19373904.

The previous prime is 20041003. The next prime is 20041031. The reversal of 20041013 is 31014002.

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 20041013 - 2⁴ = 20040997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20040985 and 20041003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370 + ... + 7692.

It is an arithmetic number, because the mean of its divisors is an integer number (2589396).

Almost surely, 2^20041013 is an apocalyptic number.

It is an amenable number.

20041013 is a deficient number, since it is larger than the sum of its proper divisors (674155).

20041013 is a wasteful number, since it uses less digits than its factorization.

20041013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20041013 is about 4476.7189994459. The cubic root of 20041013 is about 271.6271789914.

Adding to 20041013 its reverse (31014002), we get a palindrome (51055015).

The spelling of 20041013 in words is "twenty million, forty-one thousand, thirteen".