2231217 has 6 divisors (see below), whose sum is σ = 3222882. Its totient is φ = 1487472.

The previous prime is 2231209. The next prime is 2231219. The reversal of 2231217 is 7121322.

It can be written as a sum of positive squares in only one way, i.e., 1382976 + 848241 = 1176^2 + 921^2 .

It is not a de Polignac number, because 2231217 - 2³ = 2231209 is a prime.

It is a super-3 number, since 3×2231217³ = 33323198904563685939, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231217.

It is not an unprimeable number, because it can be changed into a prime (2231219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123948 + ... + 123965.

It is an arithmetic number, because the mean of its divisors is an integer number (537147).

2^2231217 is an apocalyptic number.

It is an amenable number.

2231217 is a deficient number, since it is larger than the sum of its proper divisors (991665).

2231217 is a wasteful number, since it uses less digits than its factorization.

2231217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247919 (or 247916 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2231217 is about 1493.7258784663. The cubic root of 2231217 is about 130.6714178417.

Adding to 2231217 its reverse (7121322), we get a palindrome (9352539).

The spelling of 2231217 in words is "two million, two hundred thirty-one thousand, two hundred seventeen".