20023143 has 8 divisors (see below), whose sum is σ = 30511488. Its totient is φ = 11441784.

The previous prime is 20023141. The next prime is 20023147. The reversal of 20023143 is 34132002.

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

It is not a de Polignac number, because 20023143 - 2¹ = 20023141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023141) 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, 476721 + ... + 476762.

It is an arithmetic number, because the mean of its divisors is an integer number (3813936).

Almost surely, 2^20023143 is an apocalyptic number.

20023143 is a deficient number, since it is larger than the sum of its proper divisors (10488345).

20023143 is an equidigital number, since it uses as much as digits as its factorization.

20023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953493.

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

The square root of 20023143 is about 4474.7226729709. The cubic root of 20023143 is about 271.5464209125.

Adding to 20023143 its reverse (34132002), we get a palindrome (54155145).

The spelling of 20023143 in words is "twenty million, twenty-three thousand, one hundred forty-three".