163143236 has 6 divisors (see below), whose sum is σ = 285500670. Its totient is φ = 81571616.

The previous prime is 163143217. The next prime is 163143259. The reversal of 163143236 is 632341361.

163143236 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 128686336 + 34456900 = 11344^2 + 5870^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163143199 and 163143208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20392901 + ... + 20392908.

It is an arithmetic number, because the mean of its divisors is an integer number (47583445).

Almost surely, 2^163143236 is an apocalyptic number.

It is an amenable number.

163143236 is a deficient number, since it is larger than the sum of its proper divisors (122357434).

163143236 is a wasteful number, since it uses less digits than its factorization.

163143236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40785813 (or 40785811 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 163143236 is about 12772.7536576887. The cubic root of 163143236 is about 546.4155173600.

Adding to 163143236 its reverse (632341361), we get a palindrome (795484597).

The spelling of 163143236 in words is "one hundred sixty-three million, one hundred forty-three thousand, two hundred thirty-six".