71223227 has 4 divisors (see below), whose sum is σ = 71695056. Its totient is φ = 70751400.

The previous prime is 71223223. The next prime is 71223233. The reversal of 71223227 is 72232217.

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 71223227 - 2² = 71223223 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 71223196 and 71223205.

It is not an unprimeable number, because it can be changed into a prime (71223223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235688 + ... + 235989.

It is an arithmetic number, because the mean of its divisors is an integer number (17923764).

Almost surely, 2^71223227 is an apocalyptic number.

71223227 is a deficient number, since it is larger than the sum of its proper divisors (471829).

71223227 is a wasteful number, since it uses less digits than its factorization.

71223227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471828.

The product of its digits is 2352, while the sum is 26.

The square root of 71223227 is about 8439.3854634091. The cubic root of 71223227 is about 414.5152844674.

The spelling of 71223227 in words is "seventy-one million, two hundred twenty-three thousand, two hundred twenty-seven".