163243213 has 8 divisors (see below), whose sum is σ = 194675328. Its totient is φ = 133839024.

The previous prime is 163243207. The next prime is 163243217. The reversal of 163243213 is 312342361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-163243213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163243217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506806 + ... + 507127.

It is an arithmetic number, because the mean of its divisors is an integer number (24334416).

Almost surely, 2^163243213 is an apocalyptic number.

It is an amenable number.

163243213 is a deficient number, since it is larger than the sum of its proper divisors (31432115).

163243213 is a wasteful number, since it uses less digits than its factorization.

163243213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013963.

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

The square root of 163243213 is about 12776.6667405861. Note that the first 3 decimals coincide. The cubic root of 163243213 is about 546.5271121976.

Adding to 163243213 its reverse (312342361), we get a palindrome (475585574).

The spelling of 163243213 in words is "one hundred sixty-three million, two hundred forty-three thousand, two hundred thirteen".