227971217 has 4 divisors (see below), whose sum is σ = 228207936. Its totient is φ = 227734500.

The previous prime is 227971201. The next prime is 227971229. The reversal of 227971217 is 712179722.

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.

It is a cyclic number.

It is not a de Polignac number, because 227971217 - 2⁴ = 227971201 is a prime.

It is a super-2 number, since 2×227971217² = 103941751560922178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227971267) 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, 116909 + ... + 118842.

It is an arithmetic number, because the mean of its divisors is an integer number (57051984).

Almost surely, 2^227971217 is an apocalyptic number.

It is an amenable number.

227971217 is a deficient number, since it is larger than the sum of its proper divisors (236719).

227971217 is an equidigital number, since it uses as much as digits as its factorization.

227971217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236718.

The product of its digits is 24696, while the sum is 38.

The square root of 227971217 is about 15098.7157400886. The cubic root of 227971217 is about 610.8857659422.

The spelling of 227971217 in words is "two hundred twenty-seven million, nine hundred seventy-one thousand, two hundred seventeen".