163423312 has 80 divisors (see below), whose sum is σ = 365132880. Its totient is φ = 70189056.

The previous prime is 163423307. The next prime is 163423343. The reversal of 163423312 is 213324361.

It can be written as a sum of positive squares in 8 ways, for example, as 2742336 + 160680976 = 1656^2 + 12676^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399364 + ... + 399772.

It is an arithmetic number, because the mean of its divisors is an integer number (4564161).

Almost surely, 2^163423312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163423312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182566440).

163423312 is an abundant number, since it is smaller than the sum of its proper divisors (201709568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163423312 is a wasteful number, since it uses less digits than its factorization.

163423312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 554 counting only the distinct ones).

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

The square root of 163423312 is about 12783.7127627306. The cubic root of 163423312 is about 546.7280247078.

Adding to 163423312 its reverse (213324361), we get a palindrome (376747673).

The spelling of 163423312 in words is "one hundred sixty-three million, four hundred twenty-three thousand, three hundred twelve".