280223 has 2 divisors, whose sum is σ = 280224. Its totient is φ = 280222.

The previous prime is 280219. The next prime is 280229. The reversal of 280223 is 322082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280223 - 2² = 280219 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140111 + 140112.

It is an arithmetic number, because the mean of its divisors is an integer number (140112).

2²⁸⁰²²³ is an apocalyptic number.

280223 is a deficient number, since it is larger than the sum of its proper divisors (1).

280223 is an equidigital number, since it uses as much as digits as its factorization.

280223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 280223 is about 529.3609354684. The cubic root of 280223 is about 65.4386893995.

It can be divided in two parts, 2802 and 23, that multiplied together give a palindrome (64446).

The spelling of 280223 in words is "two hundred eighty thousand, two hundred twenty-three".