163311323 has 16 divisors (see below), whose sum is σ = 195277824. Its totient is φ = 133650240.

The previous prime is 163311311. The next prime is 163311349. The reversal of 163311323 is 323113361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 163311323 - 2⁶ = 163311259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163311623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7436 + ... + 19542.

It is an arithmetic number, because the mean of its divisors is an integer number (12204864).

Almost surely, 2^163311323 is an apocalyptic number.

163311323 is a deficient number, since it is larger than the sum of its proper divisors (31966501).

163311323 is a wasteful number, since it uses less digits than its factorization.

163311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12202.

The product of its digits is 972, while the sum is 23.

The square root of 163311323 is about 12779.3318682942. The cubic root of 163311323 is about 546.6031108362.

Adding to 163311323 its reverse (323113361), we get a palindrome (486424684).

The spelling of 163311323 in words is "one hundred sixty-three million, three hundred eleven thousand, three hundred twenty-three".