163211284 has 6 divisors (see below), whose sum is σ = 285619754. Its totient is φ = 81605640.

The previous prime is 163211281. The next prime is 163211297. The reversal of 163211284 is 482112361.

163211284 is digitally balanced in base 3, because in such base 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., 163072900 + 138384 = 12770^2 + 372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163211281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20401407 + ... + 20401414.

Almost surely, 2^163211284 is an apocalyptic number.

It is an amenable number.

163211284 is a deficient number, since it is larger than the sum of its proper divisors (122408470).

163211284 is a wasteful number, since it uses less digits than its factorization.

163211284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40802825 (or 40802823 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 163211284 is about 12775.4171751845. The cubic root of 163211284 is about 546.4914778382.

The spelling of 163211284 in words is "one hundred sixty-three million, two hundred eleven thousand, two hundred eighty-four".