280424803 has 2 divisors, whose sum is σ = 280424804. Its totient is φ = 280424802.

The previous prime is 280424773. The next prime is 280424821. The reversal of 280424803 is 308424082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280424803 - 2¹⁷ = 280293731 is a prime.

It is not a weakly prime, because it can be changed into another prime (280424003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140212401 + 140212402.

It is an arithmetic number, because the mean of its divisors is an integer number (140212402).

Almost surely, 2^280424803 is an apocalyptic number.

280424803 is a deficient number, since it is larger than the sum of its proper divisors (1).

280424803 is an equidigital number, since it uses as much as digits as its factorization.

280424803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 280424803 is about 16745.8891373376. The cubic root of 280424803 is about 654.5439421922.

Adding to 280424803 its reverse (308424082), we get a palindrome (588848885).

The spelling of 280424803 in words is "two hundred eighty million, four hundred twenty-four thousand, eight hundred three".