163323317 has 4 divisors (see below), whose sum is σ = 164515596. Its totient is φ = 162131040.

The previous prime is 163323313. The next prime is 163323319. The reversal of 163323317 is 713323361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109286116 + 54037201 = 10454^2 + 7351^2 .

It is a cyclic number.

It is not a de Polignac number, because 163323317 - 2² = 163323313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163323317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163323313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595934 + ... + 596207.

It is an arithmetic number, because the mean of its divisors is an integer number (41128899).

Almost surely, 2^163323317 is an apocalyptic number.

It is an amenable number.

163323317 is a deficient number, since it is larger than the sum of its proper divisors (1192279).

163323317 is a wasteful number, since it uses less digits than its factorization.

163323317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192278.

The product of its digits is 6804, while the sum is 29.

The square root of 163323317 is about 12779.8011330380. The cubic root of 163323317 is about 546.6164918174.

Adding to 163323317 its reverse (713323361), we get a palindrome (876646678).

The spelling of 163323317 in words is "one hundred sixty-three million, three hundred twenty-three thousand, three hundred seventeen".