163302213 has 4 divisors (see below), whose sum is σ = 217736288. Its totient is φ = 108868140.

The previous prime is 163302197. The next prime is 163302239. The reversal of 163302213 is 312203361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312203361 = 3 ⋅104067787.

It is not a de Polignac number, because 163302213 - 2⁴ = 163302197 is a prime.

It is a super-2 number, since 2×163302213² = 53335225541394738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 163302213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163302253) 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, 27217033 + ... + 27217038.

It is an arithmetic number, because the mean of its divisors is an integer number (54434072).

Almost surely, 2^163302213 is an apocalyptic number.

It is an amenable number.

163302213 is a deficient number, since it is larger than the sum of its proper divisors (54434075).

163302213 is an equidigital number, since it uses as much as digits as its factorization.

163302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54434074.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 163302213 is about 12778.9754284137. The cubic root of 163302213 is about 546.5929469218.

Adding to 163302213 its reverse (312203361), we get a palindrome (475505574).

The spelling of 163302213 in words is "one hundred sixty-three million, three hundred two thousand, two hundred thirteen".