223128863 has 2 divisors, whose sum is σ = 223128864. Its totient is φ = 223128862.

The previous prime is 223128853. The next prime is 223128883. The reversal of 223128863 is 368821322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223128863 is a prime.

It is a super-3 number, since 3×223128863³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223128853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111564431 + 111564432.

It is an arithmetic number, because the mean of its divisors is an integer number (111564432).

Almost surely, 2^223128863 is an apocalyptic number.

223128863 is a deficient number, since it is larger than the sum of its proper divisors (1).

223128863 is an equidigital number, since it uses as much as digits as its factorization.

223128863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 223128863 is about 14937.4985523012. The cubic root of 223128863 is about 606.5294843720.

The spelling of 223128863 in words is "two hundred twenty-three million, one hundred twenty-eight thousand, eight hundred sixty-three".