143640227 has 2 divisors, whose sum is σ = 143640228. Its totient is φ = 143640226.

The previous prime is 143640223. The next prime is 143640239. The reversal of 143640227 is 722046341.

143640227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143640227 - 2² = 143640223 is a prime.

It is a super-3 number, since 3×143640227³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143640227.

It is not a weakly prime, because it can be changed into another prime (143640223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71820113 + 71820114.

It is an arithmetic number, because the mean of its divisors is an integer number (71820114).

Almost surely, 2^143640227 is an apocalyptic number.

143640227 is a deficient number, since it is larger than the sum of its proper divisors (1).

143640227 is an equidigital number, since it uses as much as digits as its factorization.

143640227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 143640227 is about 11985.0000834376. Note that the first 4 decimals coincide. The cubic root of 143640227 is about 523.7113999915.

Adding to 143640227 its reverse (722046341), we get a palindrome (865686568).

The spelling of 143640227 in words is "one hundred forty-three million, six hundred forty thousand, two hundred twenty-seven".