20013043 has 8 divisors (see below), whose sum is σ = 20751696. Its totient is φ = 19286400.

The previous prime is 20013031. The next prime is 20013053. The reversal of 20013043 is 34031002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013043 - 2¹³ = 20004851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013053) 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, 463 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (2593962).

Almost surely, 2^20013043 is an apocalyptic number.

20013043 is a deficient number, since it is larger than the sum of its proper divisors (738653).

20013043 is an equidigital number, since it uses as much as digits as its factorization.

20013043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20013043 is about 4473.5939690589. The cubic root of 20013043 is about 271.5007557520.

Adding to 20013043 its reverse (34031002), we get a palindrome (54044045).

The spelling of 20013043 in words is "twenty million, thirteen thousand, forty-three".