163222231 has 4 divisors (see below), whose sum is σ = 163799272. Its totient is φ = 162645192.

The previous prime is 163222229. The next prime is 163222247. The reversal of 163222231 is 132222361.

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

It is a cyclic number.

It is not a de Polignac number, because 163222231 - 2¹ = 163222229 is a prime.

It is a super-2 number, since 2×163222231² = 53282993385234722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163222291) 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, 288096 + ... + 288661.

It is an arithmetic number, because the mean of its divisors is an integer number (40949818).

Almost surely, 2^163222231 is an apocalyptic number.

163222231 is a deficient number, since it is larger than the sum of its proper divisors (577041).

163222231 is an equidigital number, since it uses as much as digits as its factorization.

163222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577040.

The product of its digits is 864, while the sum is 22.

The square root of 163222231 is about 12775.8456080214. The cubic root of 163222231 is about 546.5036957607.

Adding to 163222231 its reverse (132222361), we get a palindrome (295444592).

The spelling of 163222231 in words is "one hundred sixty-three million, two hundred twenty-two thousand, two hundred thirty-one".