20043011 has 8 divisors (see below), whose sum is σ = 20848320. Its totient is φ = 19251648.

The previous prime is 20043007. The next prime is 20043053. The reversal of 20043011 is 11034002.

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 20043011 - 2² = 20043007 is a prime.

It is a super-2 number, since 2×20043011² = 803444579892242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20042983 and 20043001.

It is not an unprimeable number, because it can be changed into a prime (20043061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (2606040).

Almost surely, 2^20043011 is an apocalyptic number.

20043011 is a deficient number, since it is larger than the sum of its proper divisors (805309).

20043011 is an equidigital number, since it uses as much as digits as its factorization.

20043011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973.

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

The square root of 20043011 is about 4476.9421483866. The cubic root of 20043011 is about 271.6362053659.

Adding to 20043011 its reverse (11034002), we get a palindrome (31077013).

Subtracting from 20043011 its reverse (11034002), we obtain a palindrome (9009009).

The spelling of 20043011 in words is "twenty million, forty-three thousand, eleven".