20213043 has 8 divisors (see below), whose sum is σ = 27320208. Its totient is φ = 13290624.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20213043 is 34031202.

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

It is not a de Polignac number, because 20213043 - 2⁹ = 20212531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20213047) 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, 45930 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (3415026).

Almost surely, 2^20213043 is an apocalyptic number.

20213043 is a deficient number, since it is larger than the sum of its proper divisors (7107165).

20213043 is an equidigital number, since it uses as much as digits as its factorization.

20213043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92373.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20213043 is about 4495.8917914025. The cubic root of 20213043 is about 272.4021723301.

Adding to 20213043 its reverse (34031202), we get a palindrome (54244245).

The spelling of 20213043 in words is "twenty million, two hundred thirteen thousand, forty-three".