423311143 has 2 divisors, whose sum is σ = 423311144. Its totient is φ = 423311142.

The previous prime is 423311131. The next prime is 423311171. The reversal of 423311143 is 341113324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423311143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423311243) 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, 211655571 + 211655572.

It is an arithmetic number, because the mean of its divisors is an integer number (211655572).

Almost surely, 2^423311143 is an apocalyptic number.

423311143 is a deficient number, since it is larger than the sum of its proper divisors (1).

423311143 is an equidigital number, since it uses as much as digits as its factorization.

423311143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 423311143 is about 20574.5265559137. The cubic root of 423311143 is about 750.8500838163.

Adding to 423311143 its reverse (341113324), we get a palindrome (764424467).

It can be divided in two parts, 4233 and 11143, that added together give a square (15376 = 124²).

The spelling of 423311143 in words is "four hundred twenty-three million, three hundred eleven thousand, one hundred forty-three".