163228143 has 12 divisors (see below), whose sum is σ = 235667400. Its totient is φ = 100447776.

The previous prime is 163228111. The next prime is 163228151. The reversal of 163228143 is 341822361.

It is not a de Polignac number, because 163228143 - 2⁵ = 163228111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163228143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163228243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160468 + ... + 161481.

It is an arithmetic number, because the mean of its divisors is an integer number (19638950).

Almost surely, 2^163228143 is an apocalyptic number.

163228143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163228143 is a deficient number, since it is larger than the sum of its proper divisors (72439257).

163228143 is a wasteful number, since it uses less digits than its factorization.

163228143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321978 (or 321965 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 163228143 is about 12776.0769800436. The cubic root of 163228143 is about 546.5102939036.

The spelling of 163228143 in words is "one hundred sixty-three million, two hundred twenty-eight thousand, one hundred forty-three".