223903 has 2 divisors, whose sum is σ = 223904. Its totient is φ = 223902.

The previous prime is 223849. The next prime is 223919. The reversal of 223903 is 309322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223903 - 2¹⁷ = 92831 is a prime.

223903 is a lucky number.

It is a nialpdrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111951 + 111952.

It is an arithmetic number, because the mean of its divisors is an integer number (111952).

2²²³⁹⁰³ is an apocalyptic number.

223903 is a deficient number, since it is larger than the sum of its proper divisors (1).

223903 is an equidigital number, since it uses as much as digits as its factorization.

223903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 223903 is about 473.1838965984. The cubic root of 223903 is about 60.7230118287.

The spelling of 223903 in words is "two hundred twenty-three thousand, nine hundred three".