280500823 has 2 divisors, whose sum is σ = 280500824. Its totient is φ = 280500822.

The previous prime is 280500791. The next prime is 280500839. The reversal of 280500823 is 328005082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280500823 - 2⁵ = 280500791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280500791 and 280500800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280500853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140250411 + 140250412.

It is an arithmetic number, because the mean of its divisors is an integer number (140250412).

Almost surely, 2^280500823 is an apocalyptic number.

280500823 is a deficient number, since it is larger than the sum of its proper divisors (1).

280500823 is an equidigital number, since it uses as much as digits as its factorization.

280500823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 280500823 is about 16748.1587943272. The cubic root of 280500823 is about 654.6030833408.

The spelling of 280500823 in words is "two hundred eighty million, five hundred thousand, eight hundred twenty-three".