163223143 has 2 divisors, whose sum is σ = 163223144. Its totient is φ = 163223142.

The previous prime is 163223131. The next prime is 163223197. The reversal of 163223143 is 341322361.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163223143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163221143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81611571 + 81611572.

It is an arithmetic number, because the mean of its divisors is an integer number (81611572).

Almost surely, 2^163223143 is an apocalyptic number.

163223143 is a deficient number, since it is larger than the sum of its proper divisors (1).

163223143 is an equidigital number, since it uses as much as digits as its factorization.

163223143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 163223143 is about 12775.8813003252. The cubic root of 163223143 is about 546.5047136172.

The spelling of 163223143 in words is "one hundred sixty-three million, two hundred twenty-three thousand, one hundred forty-three".