20223117 has 12 divisors (see below), whose sum is σ = 29612284. Its totient is φ = 13296960.

The previous prime is 20223109. The next prime is 20223139. The reversal of 20223117 is 71132202.

It can be written as a sum of positive squares in 2 ways, for example, as 7733961 + 12489156 = 2781^2 + 3534^2 .

It is not a de Polignac number, because 20223117 - 2³ = 20223109 is a prime.

It is a super-2 number, since 2×20223117² = 817948922391378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20223117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14734 + ... + 16047.

Almost surely, 2^20223117 is an apocalyptic number.

It is an amenable number.

20223117 is a deficient number, since it is larger than the sum of its proper divisors (9389167).

20223117 is a wasteful number, since it uses less digits than its factorization.

20223117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860 (or 30857 counting only the distinct ones).

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

The square root of 20223117 is about 4497.0120079893. The cubic root of 20223117 is about 272.4474190835.

Adding to 20223117 its reverse (71132202), we get a palindrome (91355319).

The spelling of 20223117 in words is "twenty million, two hundred twenty-three thousand, one hundred seventeen".