20234143 has 2 divisors, whose sum is σ = 20234144. Its totient is φ = 20234142.

The previous prime is 20234117. The next prime is 20234147. The reversal of 20234143 is 34143202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20234143 - 2¹⁷ = 20103071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20234143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20234147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117071 + 10117072.

It is an arithmetic number, because the mean of its divisors is an integer number (10117072).

Almost surely, 2^20234143 is an apocalyptic number.

20234143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234143 is an equidigital number, since it uses as much as digits as its factorization.

20234143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20234143 is about 4498.2377660591. The cubic root of 20234143 is about 272.4969244666.

Adding to 20234143 its reverse (34143202), we get a palindrome (54377345).

The spelling of 20234143 in words is "twenty million, two hundred thirty-four thousand, one hundred forty-three".