280316461 has 2 divisors, whose sum is σ = 280316462. Its totient is φ = 280316460.

The previous prime is 280316459. The next prime is 280316489. The reversal of 280316461 is 164613082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262634436 + 17682025 = 16206^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 280316461 - 2¹ = 280316459 is a prime.

Together with 280316459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280316431) 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, 140158230 + 140158231.

It is an arithmetic number, because the mean of its divisors is an integer number (140158231).

Almost surely, 2^280316461 is an apocalyptic number.

It is an amenable number.

280316461 is a deficient number, since it is larger than the sum of its proper divisors (1).

280316461 is an equidigital number, since it uses as much as digits as its factorization.

280316461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 280316461 is about 16742.6539413559. The cubic root of 280316461 is about 654.4596370789.

The spelling of 280316461 in words is "two hundred eighty million, three hundred sixteen thousand, four hundred sixty-one".