163305213 has 32 divisors (see below), whose sum is σ = 237344256. Its totient is φ = 99483648.

The previous prime is 163305211. The next prime is 163305229. The reversal of 163305213 is 312503361.

It is a happy number.

It is not a de Polignac number, because 163305213 - 2¹ = 163305211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163305211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462445 + ... + 462797.

It is an arithmetic number, because the mean of its divisors is an integer number (7417008).

Almost surely, 2^163305213 is an apocalyptic number.

It is an amenable number.

163305213 is a deficient number, since it is larger than the sum of its proper divisors (74039043).

163305213 is a wasteful number, since it uses less digits than its factorization.

163305213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 163305213 is about 12779.0928081770. The cubic root of 163305213 is about 546.5962940264.

Adding to 163305213 its reverse (312503361), we get a palindrome (475808574).

The spelling of 163305213 in words is "one hundred sixty-three million, three hundred five thousand, two hundred thirteen".