223856117 has 2 divisors, whose sum is σ = 223856118. Its totient is φ = 223856116.

The previous prime is 223856099. The next prime is 223856123. The reversal of 223856117 is 711658322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139381636 + 84474481 = 11806^2 + 9191^2 .

It is a cyclic number.

It is not a de Polignac number, because 223856117 - 2⁸ = 223855861 is a prime.

It is a super-3 number, since 3×223856117³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223856167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111928058 + 111928059.

It is an arithmetic number, because the mean of its divisors is an integer number (111928059).

Almost surely, 2^223856117 is an apocalyptic number.

It is an amenable number.

223856117 is a deficient number, since it is larger than the sum of its proper divisors (1).

223856117 is an equidigital number, since it uses as much as digits as its factorization.

223856117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 223856117 is about 14961.8219812963. The cubic root of 223856117 is about 607.1877327344.

The spelling of 223856117 in words is "two hundred twenty-three million, eight hundred fifty-six thousand, one hundred seventeen".